CN114928785A - Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium - Google Patents
Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium Download PDFInfo
- Publication number
- CN114928785A CN114928785A CN202210462339.8A CN202210462339A CN114928785A CN 114928785 A CN114928785 A CN 114928785A CN 202210462339 A CN202210462339 A CN 202210462339A CN 114928785 A CN114928785 A CN 114928785A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- noise reduction
- earphone device
- loudspeaker
- microphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
- H04R1/1075—Mountings of transducers in earphones or headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a feedback noise reduction method and a device of earphone equipment, the earphone equipment and a computer readable storage medium, the method is applied to the earphone equipment internally provided with an ultrasonic loudspeaker, and comprises the following steps: transmitting an ultrasonic signal through an ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain a distance parameter between a microphone and the ultrasonic loudspeaker in the earphone device and a preset human ear drum; calculating a loudness attenuation parameter of the sound signal propagating the headphone device according to the distance parameter; and compensating the cancellation signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment. The invention can correct the larger difference between the reverse offset signal sent by the loudspeaker and the noise signal actually received by the ear drum membrane of the human ear caused by the distance among the loudspeaker, the microphone and the ear drum membrane of the user, thereby effectively improving the feedback noise reduction effect of the earphone equipment.
Description
Technical Field
The present invention relates to the field of earphone technologies, and in particular, to a method and an apparatus for feedback noise reduction of an earphone device, and a computer-readable storage medium.
Background
In recent years, smart headsets have been widely popularized in the market, and particularly, smart headsets with active noise reduction function are concerned and pursued by many market users. The important component of the active noise reduction function of the earphone is feedback noise reduction. As shown in fig. 3, the feedback noise reduction is generally implemented by disposing a microphone inside the earphone to record noise at human ears, then performing phase modification on the noise through a filter, and then performing noise cancellation by emitting opposite sound waves with opposite phases and equal amplitudes through the speakers of the earphone.
However, the above-mentioned feedback noise reduction requires that the distance between the microphone for collecting noise and the eardrum and the speaker is as close as possible, so as to ensure that the intensity of the reverse cancellation signal emitted by the speaker is substantially equal to the intensity of the noise signal that originally reaches the human ear. However, since the diaphragm of the speaker in the existing earphone device vibrates during operation, a certain space must be reserved between the speaker and the microphone, that is, the microphone cannot approach the speaker infinitely; at the same time, the microphone itself serves as an internal component of the earphone device, which is not as close as possible to the eardrum of the human ear in the case of normal use of the earphone device by the user. Thus, a certain distance exists between the microphone and the eardrum of the human ear and between the microphone and the speaker, so that a certain difference exists between the noise signal received by the microphone and the noise signal actually received by the eardrum of the human ear, and further, a larger difference naturally exists between the reverse cancellation signal sent by the speaker based on the noise collected by the microphone and the noise signal received by the eardrum of the human ear.
In summary, in the feedback noise reduction process of the existing earphone device with the active noise reduction function, because the distance between the speaker and the microphone in the earphone device and the eardrum of the human ear causes a large difference between the cancellation signal sent by the speaker and the noise signal received by the eardrum of the human ear, the noise reduction effect is poor.
Disclosure of Invention
The present invention provides a method and an apparatus for feedback noise reduction of an earphone device, and a computer readable storage medium, which are used to correct a large difference between a reverse cancellation signal emitted from a speaker and a noise signal actually received by a eardrum of a user due to a certain distance between the speaker, a microphone, and the eardrum of the user in the earphone device, so as to effectively improve a feedback noise reduction effect of the earphone device.
In order to achieve the above object, the present invention provides a feedback noise reduction method for an earphone device, the feedback noise reduction method for an earphone device being applied to an earphone device in which an ultrasonic speaker is internally configured, the method including:
transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain a distance parameter among a microphone, the ultrasonic loudspeaker and a preset human eardrum inside the earphone device;
calculating a loudness attenuation parameter of a sound signal propagating the headphone device according to the distance parameter;
and compensating the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
Optionally, the loudness attenuation parameter of the sound signal of the headphone apparatus includes: the loudness attenuation amount of the sound transmitted by the ultrasonic loudspeaker to the microphone and the loudness loss amount of the sound transmitted by the ultrasonic loudspeaker to the tympanic membrane of the preset human ear are measured;
the step of compensating the cancellation signal output by the ultrasonic speaker according to the loudness attenuation parameter to perform feedback noise reduction of the earphone device includes:
compensating the propagation loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness attenuation amount, and compensating the loudness loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness loss amount;
and determining a noise reduction compensation amount of the output offset signal of the ultrasonic loudspeaker according to the compensated propagation loss and loudness loss, and outputting the offset signal according to the noise reduction compensation amount through the ultrasonic loudspeaker to perform feedback noise reduction of the earphone equipment.
Optionally, the propagating loudness attenuation parameters of the sound signal of the earphone device comprises: the step of calculating a loudness attenuation parameter of a sound signal propagating through the earphone device based on the distance parameter includes:
simulating the propagation condition of the sound signal according to the distance parameter and the preset angle parameter;
outputting a sound signal based on the propagation condition in a preset simulated human ear environment to perform propagation test;
and calculating the loudness attenuation quantity of the sound transmitted from the ultrasonic loudspeaker to the microphone based on the transmission test.
Optionally, the loudness attenuation parameter of the sound signal of the headphone apparatus includes: the step of calculating a loudness attenuation parameter of a sound signal propagating through the earphone device according to the distance parameter includes:
detecting a first intensity of a sound signal received by the microphone and detecting a second intensity of the sound signal received by the eardrum of the preset human ear in the propagation test;
and calculating the loudness loss amount of the sound transmitted to the eardrum of the preset human ear by the ultrasonic loudspeaker according to the first intensity and the second intensity.
Optionally, the preset human ear tympanic membrane comprises: simulating a human ear tympanic membrane in a human ear and a tympanic membrane of an ear of an actual user;
the step of measuring the distance by transmitting the ultrasonic signal through the ultrasonic speaker to calculate the distance parameters among the microphone, the ultrasonic speaker and the preset eardrum of the human ear inside the earphone device comprises:
when the earphone device is determined to be worn on the simulated human ear, the ultrasonic loudspeaker emits an ultrasonic signal to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic speaker and the eardrum of the human ear in the earphone device;
or when the earphone device is determined to be worn to the ear of the actual user, transmitting an ultrasonic signal through the ultrasonic loudspeaker to perform distance measurement so as to calculate and obtain a distance parameter between a microphone inside the earphone device, the ultrasonic loudspeaker and the eardrum of the ear of the actual user.
Optionally, the step of calculating a distance parameter between a microphone, the ultrasonic speaker and a preset ear drum inside the earphone device includes:
in the distance measurement, detecting angle information of an ultrasonic signal emitted by the ultrasonic loudspeaker and first time information of the ultrasonic signal transmitted into the microphone after being reflected by the tympanic membrane of the preset human ear;
and calculating to obtain distance parameters among the microphone, the ultrasonic loudspeaker and the preset human eardrum according to the angle information, the first time information and second time information of the ultrasonic signal directly transmitted into the microphone.
Optionally, the method further comprises:
and carrying out angle adjustment of the ultrasonic loudspeaker by transmitting an ultrasonic signal through the ultrasonic loudspeaker, and executing the step of carrying out distance measurement by transmitting the ultrasonic signal through the ultrasonic loudspeaker on the basis of the ultrasonic loudspeaker after the angle adjustment to obtain a distance parameter between a microphone in the earphone device, the ultrasonic loudspeaker and a preset ear drum.
In order to achieve the above object, the present invention further provides a feedback noise reduction apparatus for an earphone device, the feedback noise reduction apparatus for an earphone device being applied to an earphone device in which an ultrasonic speaker is internally provided, the apparatus comprising:
the distance measurement module is used for transmitting an ultrasonic signal through the ultrasonic loudspeaker to measure the distance so as to calculate and obtain the distance parameter among a microphone, the ultrasonic loudspeaker and a preset ear drum membrane in the earphone device;
the attenuation calculation module is used for calculating a loudness attenuation parameter of a sound signal which propagates the earphone equipment according to the distance parameter;
and the noise reduction module is used for compensating the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
The steps of the feedback noise reduction method of the earphone device are realized when each functional module of the feedback noise reduction device of the earphone device runs.
To achieve the above object, the present invention also provides an earphone device, including: a memory, a processor and a feedback noise reduction program of a headphone apparatus stored on the memory and executable on the processor, the feedback noise reduction program of the headphone apparatus implementing the steps of the feedback noise reduction method of a headphone apparatus as described above when executed by the processor.
Furthermore, in order to achieve the above object, the present invention also provides a computer readable storage medium, on which a feedback noise reduction program of a headphone apparatus is stored, and when being executed by a processor, the computer readable storage medium implements the steps of the feedback noise reduction method of the headphone apparatus as described above.
In the feedback noise reduction link of the active noise reduction of the earphone equipment, firstly, an ultrasonic loudspeaker configured in the earphone equipment emits an ultrasonic signal to carry out distance measurement so as to calculate distance parameters among a microphone, the ultrasonic loudspeaker and a preset ear drum in the earphone equipment based on the distance measurement; then, the earphone device further calculates a loudness attenuation parameter of the sound signal propagating the earphone device according to the distance parameter; finally, the offset signal output by the ultrasonic loudspeaker is compensated according to the loudness attenuation parameter, so that the feedback noise reduction of the earphone device for the noise received by the eardrum of the preset human ear is carried out.
Compared with the mode of performing feedback noise reduction by the traditional earphone device, the method and the device have the advantages that the ultrasonic loudspeaker is configured in the earphone device to emit the ultrasonic signals for distance measurement, so that the loudness attenuation parameters of the sound signals of the current earphone device are determined based on the measured distances among the ultrasonic loudspeaker, the microphone and the eardrum of the human ear, and the offset signals of the ultrasonic loudspeaker aiming at the noise signals received by the eardrum of the human ear are compensated based on the loudness attenuation parameters. Therefore, the invention can realize real-time measurement of the distance parameters among the ultrasonic loudspeaker, the microphone and the ear drum membrane of the human ear by configuring the ultrasonic loudspeaker in the earphone equipment, so as to correct the larger difference between the reverse offset signal sent by the loudspeaker and the actually received noise signal of the ear drum membrane of the human ear caused by the distance among the loudspeaker, the microphone and the ear drum membrane of the user based on the measured distance parameters, thereby effectively improving the feedback noise reduction effect of the earphone equipment.
Drawings
Fig. 1 is a schematic flow chart of a feedback noise reduction method of an earphone device according to an embodiment of the present invention;
fig. 2 is a schematic view of an application scenario of feedback noise reduction in the technical background related to the feedback noise reduction method of the headphone device according to the present invention;
fig. 3 is a schematic view of an application scenario of distance measurement by an ultrasonic speaker according to an embodiment of a feedback noise reduction method for an earphone device of the present invention;
fig. 4 is a schematic view of an application scenario of a compensation cancellation signal according to an embodiment of a feedback noise reduction method for an earphone device of the present invention;
fig. 5 is a schematic functional block diagram of a feedback noise reduction apparatus of a headphone device according to a preferred embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of a feedback noise reduction method of an earphone device according to the present invention.
Embodiments of the present invention provide embodiments of a feedback noise reduction method for a headphone apparatus, and it should be noted that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown or described here.
In this embodiment, the feedback noise reduction method for an earphone device provided by the present invention may be specifically applied to an earphone device in which an ultrasonic speaker is configured, and the feedback noise reduction method for an earphone device of the present invention includes:
step S10: transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic loudspeaker and a preset human ear drum inside the earphone device;
in this embodiment, in the process of starting and executing the active noise reduction function, in the process of executing the feedback noise reduction link, the earphone device transmits one or more ultrasonic signals through the internally configured ultrasonic speaker to perform the distance measurement operation, so as to calculate the distance parameter between the ultrasonic speaker, the microphone in the earphone device, and the preset eardrum of the human ear based on the relevant parameter of the distance measurement.
It should be noted that, in this embodiment, the microphone in the earphone device may specifically be a feedback noise reduction microphone. Further, the preset human eardrum includes: the tympanic membrane of a human ear in the human ear and the tympanic membrane of an ear of an actual user are simulated. That is, when the earphone device is worn on an artificial ear to perform a simulation test, the earphone device transmits an ultrasonic signal through the ultrasonic speaker to perform distance measurement to obtain distance parameters between the ultrasonic speaker, the microphone in the earphone device, and the eardrum in the artificial ear, or when the earphone device is worn on an ear of an actual user to perform a related test before active noise reduction, the earphone device transmits an ultrasonic signal through the ultrasonic speaker to perform distance measurement to obtain distance parameters between the ultrasonic speaker, the microphone in the earphone device, and the eardrum of the ear of the actual user.
Based on this, in some possible embodiments, the step S10 may include:
step S101: when the earphone device is determined to be worn on the simulated human ear, transmitting an ultrasonic signal through the ultrasonic speaker to perform distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic speaker and the eardrum of the human ear in the earphone device;
in this embodiment, the earphone device may specifically determine whether the earphone device is currently worn on an artificial ear through a preconfigured temperature sensor and an axial acceleration sensor, that is, when the earphone device determines that the earphone device is currently in a standard wearing posture through acceleration data of three axes, namely an X axis, a Y axis and a Z axis, acquired by the axial acceleration sensor, but does not receive temperature data transmitted by the temperature sensor when a temperature of an object contacted by an outer surface of the earphone device is in a standard temperature range of a human body, the earphone device determines that the earphone device is currently worn on the artificial ear, and then the earphone device controls an internally configured ultrasonic speaker to emit one or more ultrasonic signals to perform distance measurement operation, so as to calculate the ultrasonic speaker, the axial acceleration sensor and the temperature data based on relevant parameters of the distance measurement, The distance parameter between the microphone in the earphone device and the ear drum in the artificial ear.
Alternatively, in other possible embodiments, the step S10 may further include:
step S102: when the earphone device is determined to be worn to the ear of the actual user, an ultrasonic signal is emitted through the ultrasonic loudspeaker to carry out distance measurement, so that a distance parameter among a microphone inside the earphone device, the ultrasonic loudspeaker and the tympanic membrane of the ear of the actual user is calculated.
In this embodiment, when the earphone device determines that the earphone device is currently worn on the ear of the actual user when the acceleration data in the three axial directions of the X axis, the Y axis and the Z axis, which is acquired by the axial acceleration sensor, is in a standard wearing posture and simultaneously receives the temperature data transmitted by the temperature sensor when the temperature of the object contacted by the outer surface of the earphone device is in a human body standard temperature range, the earphone device determines that the earphone device is currently worn on the ear of the actual user, and then the earphone device performs the distance measurement operation by controlling the internally-arranged ultrasonic speaker to emit one or more ultrasonic signals, so as to calculate the distance parameter between the ultrasonic speaker, the microphone in the earphone device and the eardrum of the ear of the actual user based on the relevant parameter of the distance measurement.
In the present embodiment, the earphone device is configured with an ultrasonic speaker having a wider frequency band, and thus, based on the characteristics of a high ultrasonic frequency and the relationship λ between the wavelength λ and the sound velocity and the sound wave frequency f, which is c/f, it can be seen that, when the sound velocity c is constant, the higher the frequency f, the shorter the wavelength λ of the sound wave. Therefore, when the wavelength of the ultrasonic wave is short and is within the dimension range of the size of the earphone device, the ultrasonic wave piece has strong directivity, so that the ultrasonic wave can be approximately considered to be propagated along a straight line within the dimension range of the size of the earphone device, and further, the earphone device can calculate the distance of an obstacle (namely, an eardrum) in front of the ultrasonic speaker through the propagation angle of the ultrasonic wave and the time of the ultrasonic wave reflected back to be received by the microphone after reaching an object (passing through an ear canal) and then reaching the eardrum.
Based on this, in this embodiment and some possible embodiments described later, the step of calculating the distance parameter between the microphone, the ultrasonic speaker and the preset human eardrum inside the earphone device in the above step S10 may specifically include:
step A: in the distance measurement, detecting angle information of an ultrasonic signal emitted by the ultrasonic loudspeaker and first time information of the ultrasonic signal transmitted into the microphone after being reflected by the tympanic membrane of the preset human ear;
in the present embodiment, as shown in the application scenario of fig. 3, in the process of performing distance measurement by emitting an ultrasonic signal through an internal ultrasonic speaker, the earphone device detects the angle information of the ultrasonic signal emitted by the ultrasonic speaker immediately after the ultrasonic signal is emitted by the ultrasonic speaker, and detects the first time information that the ultrasonic signal is received by the microphone after passing through the ear canal to the eardrum and reflecting from the eardrum after the ultrasonic signal is emitted from the ultrasonic speaker.
And B, step B: and calculating to obtain distance parameters among the microphone, the ultrasonic loudspeaker and the preset eardrum according to the angle information, the first time information and second time information of the ultrasonic signal directly transmitted into the microphone.
In this embodiment, as shown in the application scenario of fig. 3, after the earphone device detects that the ultrasonic speaker transmits the sound velocity, the angle information and the first time information of the ultrasonic signal propagation during the distance measurement process performed by the ultrasonic speaker transmitting the ultrasonic signal, the earphone device further calculates the distance between the ultrasonic speaker and the microphone, the distance between the microphone and the eardrum of the human ear and the distance between the ultrasonic speaker and the eardrum of the human ear according to the angle information and the first time information, and the second time information of the ultrasonic signal received by the microphone when another ultrasonic signal is transmitted directly to the microphone through the ultrasonic speaker.
It should be noted that, in some possible embodiments, the distance between the ultrasonic speaker and the microphone may also be directly obtained by the earphone device. It should be understood that, in the actual production process of the earphone device, the design parameters of the installation positions and the spacing distances of the components in the earphone device are marked by the development and design staff of the earphone device, so that the earphone device can obtain the design parameters and analyze the design parameters to obtain the distance between the ultrasonic speaker and the microphone.
Step S20: calculating a loudness attenuation parameter of a sound signal propagating the headset device according to the distance parameter;
in this embodiment, after the earphone device emits the ultrasonic signal through the ultrasonic speaker to perform distance measurement so as to calculate the distance parameter between the ultrasonic speaker, the microphone in the earphone device and the predetermined eardrum of the human ear, the operation of performing a propagation test is further simulated according to the distance parameter so as to calculate the loudness attenuation parameter of the sound signal emitted by the earphone device during the propagation process.
Further, in some possible embodiments, the loudness attenuation parameters of the sound signal propagating the headphone apparatus may specifically include: the ultrasonic speaker propagates the loudness attenuation of the sound to the microphone. Step S20 may specifically include:
step S201: simulating the propagation condition of the sound signal according to the distance parameter and the preset angle parameter;
step S202: outputting a sound signal based on the propagation condition in a preset simulated human ear environment to perform propagation test;
step S203: and calculating the loudness attenuation of the sound transmitted from the ultrasonic loudspeaker to the microphone based on the transmission test.
It should be noted that, in this embodiment, the preset angle parameter may specifically be an angle at which an ultrasonic speaker in the earphone device transmits an ultrasonic signal. In addition, the preset simulated human ear environment may specifically be an application scenario in which the earphone device is worn on an artificially-made simulated human ear to perform a simulation test. It should be understood that, when the earphone device is worn on the ear of the actual user to perform the related debugging scenario of feedback noise reduction, the preset simulated human ear environment may naturally be replaced by the adjusting scenario, that is, the earphone device may calculate the loudness attenuation parameter of the sound signal emitted by the earphone device in the propagation process based on the distance parameter based on an application scenario of performing the simulation test alone after measuring the distance parameter between the ultrasonic speaker, the microphone and the eardrum of the human ear, or the earphone device may of course calculate the loudness attenuation parameter based on the distance parameter in real time directly in the related debugging scenario of performing feedback noise reduction on the ear of the actual user.
In this embodiment, after the earphone device performs distance measurement by emitting an ultrasonic signal through the ultrasonic speaker to calculate a distance parameter between the ultrasonic speaker, a microphone in the earphone device, and a preset eardrum of the human ear, the earphone device simulates a propagation condition for propagating a sound signal emitted by the earphone device according to the distance parameter determined in each distance measurement and an angle (the distance parameter and the selected angle are different) at which one ultrasonic speaker emits the ultrasonic signal in the preset simulated human ear environment. Immediately after that, the earphone device outputs the sound signals through the ultrasonic loudspeaker according to the simulated good propagation conditions in the preset simulated human ear environment for propagation test, so that the earphone device can calculate the loudness attenuation amount pn1 of the sound signals emitted by the earphone device in the process of propagating to the microphone based on the loudness data of a plurality of groups of sound signals detected in the propagation test (each group of loudness data comprises the loudness of the sound signals output by the ultrasonic loudspeaker and the loudness of the sound signals received by the microphone).
Further, in some possible embodiments, the loudness attenuation parameters propagating the sound signal of the earphone device may specifically include: the ultrasonic speaker transmits a loudness loss amount of sound to the eardrum of the preset human ear. Step S20, specifically, may further include:
step S204: detecting a first intensity of a sound signal received by the microphone and detecting a second intensity of the sound signal received by the eardrum of the preset human ear in the propagation test;
in this embodiment, in the process of simulating the propagation condition by the earphone device according to the distance parameter and the angle parameter, so as to output the sound signal through the ultrasonic speaker according to the simulated propagation condition in the preset simulated human ear environment for the propagation test, the first intensity of the sound signal output by the earphone device through the ultrasonic speaker, which is received by the microphone in the earphone device, and the second intensity of the sound signal received by the eardrum in the preset simulated human ear environment are detected synchronously.
Step S205: and calculating the loudness loss amount of the sound transmitted to the eardrum of the preset human ear by the ultrasonic loudspeaker according to the first intensity and the second intensity.
In the embodiment, the earphone device calculates the sound signal intensity difference pn2 between the first intensity and the second intensity as the loudness loss of the ultrasonic speaker to transmit sound to the preset human ear drum membrane immediately after detecting the first intensity of the sound signal received by the microphone and the second intensity of the sound signal received by the human ear drum membrane in the preset simulated human ear environment.
In this embodiment, the earphone device may compensate for the attenuation of the loudness of the sound signal output by the ultrasonic speaker to the microphone and the eardrum of the human ear under various distance and angle conditions by simulating the loudness attenuation pn1 of the sound signal propagation of the ultrasonic speaker and the microphone under different angles and distance conditions in the simulated human ear environment and by simulating the intensity difference pn2 between the sound signal received by the microphone and the sound signal received by the eardrum of the human ear under different distances and angles in the simulated human ear environment through the loudness attenuation pn1 and the intensity difference pn 2. Specifically, the earphone device may specifically store the loudness attenuation amount pn1 and the intensity difference value pn2 in a database circuit, so that when the earphone device is worn on the ear of an actual user for active noise reduction, the above two data may be extracted from the database circuit when a feedback noise reduction procedure is performed, so as to compensate for the attenuation of the loudness of the sound signal output by the ultrasonic speaker to the microphone and the eardrum of the human ear.
Step S30: and compensating the cancellation signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
In this embodiment, after the earphone device performs the operation of the propagation test according to the distance parameter simulation to calculate the loudness attenuation parameter of the sound signal emitted by the earphone device in the propagation process, the cancellation signal output by the ultrasonic speaker may be compensated according to the loudness attenuation parameter in the feedback noise reduction procedure, so as to perform feedback noise reduction on the noise received by the eardrum of the preset human ear by the earphone device.
It should be noted that, in this embodiment, the cancellation signal output by the ultrasonic speaker may specifically be: the ultrasonic loudspeaker outputs an acoustic signal which is reversely counteracted with respect to a noise signal collected by a microphone in the earphone device, namely the feedback noise reduction microphone. It should be understood that, in the present embodiment, the earphone device may specifically generate the acoustic signal for performing the inverse cancellation on the noise signal by performing an adjustment operation of parameters such as a phase and an amplitude with respect to the noise signal collected by the feedback noise reduction microphone in the earphone device.
Further, in some possible embodiments, the step S30 may include:
step S301: compensating the propagation loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness attenuation amount, and compensating the loudness loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness loss amount;
in this embodiment, when the earphone device performs the feedback noise reduction link to compensate the cancellation signal output by the ultrasonic speaker according to the loudness attenuation parameter, first, the propagation loss of the cancellation signal output by the ultrasonic speaker is compensated according to the loudness attenuation amount of the sound signal propagating through the earphone device among the loudness attenuation parameter, and then, the loudness loss of the cancellation signal output by the ultrasonic speaker is compensated according to the loudness loss amount of the sound propagated through the ultrasonic speaker to the eardrum of the preset human ear in the loudness attenuation parameter.
Step S302: and determining a noise reduction compensation amount of the output offset signal of the ultrasonic loudspeaker according to the compensated propagation loss and loudness loss, and outputting the offset signal according to the noise reduction compensation amount through the ultrasonic loudspeaker to perform feedback noise reduction of the earphone equipment.
As shown in the application scenario of fig. 4, the earphone device can compensate the sound intensity loss of the cancellation signal output by the ultrasonic speaker during the propagation process by the loudness attenuation pn1 and the intensity difference pn2 stored in the database circuit. That is, the loudness attenuation value p1 caused by the propagation distance and angle between the ultrasonic speaker and the microphone is compensated according to the loudness attenuation amount pn1, and then the sound loudness loss value p2 caused by the distance difference between the microphone and the eardrum of the human ear is compensated according to the intensity difference pn 2. Thus, the noise reduction compensation pt of the earphone device transmitting the cancellation signal for feedback noise reduction to the ultrasonic speaker in the feedback noise reduction link is as follows: pt ═ p1+ p 2. Therefore, when the feedback microphone receives the noise signal each time so as to perform feedback noise reduction on the noise signal, the earphone device performs feedback noise reduction on the noise signal by compensating the offset signal output by the ultrasonic speaker according to the noise reduction compensation amount pt and using the offset signal having substantially the same amplitude as the noise signal after compensation.
It should be noted that, in this embodiment, when the earphone device is worn on a simulated human ear or an actual user's ear to perform an initiating movement, the noise signal reaches the microphone of the earphone device first and then reaches the eardrum of the human ear, so that the intensity of the noise signal received by the eardrum of the human ear is substantially smaller than that of the noise signal received by the microphone, and the compensation amount of the loudness of the noise signal should be a negative value.
In this embodiment, in the process of performing the active noise reduction function by the earphone device during the start-up operation, in the step of performing the feedback noise reduction, one or more ultrasonic signals are emitted by the internally configured ultrasonic speaker to perform the distance measurement operation, so that the distance parameters between the ultrasonic speaker, the microphone in the earphone device, and the preset eardrum of the human ear are calculated based on the relevant parameters of the distance measurement. Then, the earphone device further simulates the operation of carrying out a propagation test according to the distance parameter so as to calculate the loudness attenuation parameter of the sound signal emitted by the earphone device in the propagation process. Finally, the earphone device can compensate the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter in the step of executing feedback noise reduction, so that the feedback noise reduction of the noise received by the eardrum of the preset human ear by the earphone device is carried out.
Compared with the mode of performing feedback noise reduction by the traditional earphone device, the method and the device have the advantages that the ultrasonic loudspeaker is configured in the earphone device to emit the ultrasonic signals to perform distance measurement, so that the loudness attenuation parameter of the sound signals of the current earphone device is determined based on the measured distance among the ultrasonic loudspeaker, the microphone and the eardrum of the human ear, and the offset signals of the ultrasonic loudspeaker aiming at the noise signals received by the eardrum of the human ear are compensated based on the loudness attenuation parameter. Therefore, the invention can realize real-time measurement of the distance parameters among the ultrasonic speaker, the microphone and the eardrum of the human ear by configuring the ultrasonic speaker in the earphone equipment, so as to correct the larger difference between the reverse offset signal sent by the speaker and the noise signal actually received by the eardrum of the human ear caused by the distance among the speaker, the microphone and the eardrum of the user based on the measured distance parameters, thereby effectively improving the feedback noise reduction effect of the earphone equipment.
Further, based on the above first embodiment of the feedback noise reduction method of the headphone apparatus of the present invention, a second embodiment of the feedback noise reduction method of the headphone apparatus of the present invention is proposed.
In this embodiment, the method for feedback noise reduction of the earphone device of the present invention may further include:
step C: and carrying out angle adjustment of the ultrasonic loudspeaker by transmitting an ultrasonic signal through the ultrasonic loudspeaker, and carrying out distance measurement by transmitting the ultrasonic signal through the ultrasonic loudspeaker based on the ultrasonic loudspeaker after the angle adjustment to obtain a microphone in the earphone device, the ultrasonic loudspeaker and a preset distance parameter between eardrums of human ears.
In this embodiment, after the earphone device is determined to be worn on an artificial ear or an ear of an actual user, before starting an operation of transmitting an ultrasonic signal through an ultrasonic speaker for distance measurement, the ultrasonic speaker is first used to transmit an ultrasonic signal to adjust an angle of the ultrasonic speaker, that is, the angle of the ultrasonic speaker is adjusted to enable the ultrasonic signal transmitted by the ultrasonic speaker to be transmitted to a tympanic membrane of the ear in a linear form, and further reflected from the tympanic membrane of the ear to a microphone in the linear form. Then, the earphone device performs the process of calculating the distance parameter between the ultrasonic speaker, the microphone and the human eardrum by emitting the ultrasonic signal from the ultrasonic speaker for distance measurement as defined in the step S10 through the ultrasonic speaker after the angle adjustment.
In this embodiment, in consideration of the fact that the ear structures of different users may have a certain difference in the use process of the earphone device by different actual users, in order to avoid the problem that the final feedback noise reduction effect of the earphone device is not good due to the difference, when the earphone device is determined to be used by an actual user, the distance parameter between the ultrasonic speaker, the microphone and the eardrum of the human ear can be obtained by accurately measuring in advance by adjusting the angle at which the ultrasonic speaker emits the ultrasonic signal, so that in the subsequent feedback noise reduction process, the offset signal for the noise signal can be compensated based on the accurate distance parameter, thereby ensuring the feedback noise reduction effect of the earphone device.
In addition, an embodiment of the present invention further provides a feedback noise reduction apparatus for an earphone device, and referring to fig. 5, the feedback noise reduction apparatus for an earphone device of the present invention is applied to an earphone device in which an ultrasonic speaker is configured, and includes:
the distance measuring module 10 is configured to transmit an ultrasonic signal through the ultrasonic speaker to perform distance measurement, so as to calculate a distance parameter between a microphone inside the earphone device, the ultrasonic speaker and a preset ear drum;
an attenuation calculation module 20, configured to calculate a loudness attenuation parameter of the sound signal propagating through the headphone apparatus according to the distance parameter;
and the noise reduction module 30 is configured to compensate the cancellation signal output by the ultrasonic speaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone device.
Optionally, the loudness attenuation parameter of the sound signal of the headphone apparatus comprises: a loudness attenuation of the sound transmitted by the ultrasonic speaker to the microphone and a loudness loss of the sound transmitted by the ultrasonic speaker to the tympanic membrane of the predetermined human ear;
the noise reduction module 30 of the feedback noise reduction device of the headphone apparatus of the present invention includes:
the compensating unit is used for compensating the propagation loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness attenuation amount and compensating the loudness loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness loss amount;
and the noise reduction execution unit is used for determining the noise reduction compensation amount of the output offset signal of the ultrasonic loudspeaker according to the compensated propagation loss and loudness loss, and outputting the offset signal according to the noise reduction compensation amount through the ultrasonic loudspeaker to perform feedback noise reduction on the earphone equipment.
Optionally, the propagating loudness attenuation parameters of the sound signal of the earphone device comprises: the loudness attenuation amount of the sound transmitted from the ultrasonic speaker to the microphone, the attenuation calculating module 20 of the feedback noise reduction device of the earphone device of the present invention comprises:
the condition simulation unit is used for simulating the propagation condition of the sound signal according to the distance parameter and the preset angle parameter;
the test unit is used for outputting sound signals based on the propagation conditions in a preset simulated human ear environment so as to carry out propagation test;
and the first attenuation calculating unit is used for calculating the loudness attenuation of the sound transmitted to the microphone by the ultrasonic loudspeaker based on the propagation test.
Optionally, the propagating loudness attenuation parameters of the sound signal of the earphone device comprises: the loudness loss amount of the sound transmitted by the ultrasonic speaker to the eardrum of the preset human ear, the attenuation calculating module 20 of the feedback noise reduction device of the earphone device of the present invention, further comprises:
the first detection unit is used for detecting a first intensity of a sound signal received by the microphone and detecting a second intensity of the sound signal received by the eardrum of the preset human ear in the propagation test;
and the second attenuation calculating unit is used for calculating the loudness loss amount of the transmitted sound of the ultrasonic loudspeaker to the preset ear drum according to the first intensity and the second intensity.
Optionally, the preset human eardrum comprises: the present invention relates to a distance measuring module 10 for a feedback noise reduction apparatus of an earphone device, which simulates a human ear drum in a human ear and a drum of an ear of an actual user, and comprises:
the first distance measurement unit is used for transmitting an ultrasonic signal through the ultrasonic loudspeaker to perform distance measurement when the earphone device is determined to be worn on the simulated human ear, so that distance parameters among a microphone inside the earphone device, the ultrasonic loudspeaker and the eardrum of the human ear are calculated;
and the second distance measurement unit is used for transmitting an ultrasonic signal through the ultrasonic loudspeaker to perform distance measurement when the earphone device is determined to be worn on the ear of the actual user, so as to calculate and obtain the distance parameter among the microphone inside the earphone device, the ultrasonic loudspeaker and the eardrum of the ear of the actual user.
Optionally, the ranging module 10 of the feedback noise reduction apparatus of the headphone device of the present invention further includes:
the second detection unit is used for detecting the angle information of the ultrasonic signal emitted by the ultrasonic loudspeaker and the first time information of the ultrasonic signal transmitted into the microphone after being reflected by the tympanic membrane of the preset human ear in the distance measurement;
and the distance calculation unit is used for calculating and obtaining the distance parameters among the microphone, the ultrasonic loudspeaker and the preset ear drum according to the angle information, the first time information and the second time information of the ultrasonic signal directly transmitted into the microphone.
Optionally, the distance measuring module 10 of the feedback noise reduction apparatus of the earphone device of the present invention is further configured to perform angle adjustment of the ultrasonic speaker by using the ultrasonic speaker to emit an ultrasonic signal, and perform distance measurement by using the ultrasonic speaker to emit an ultrasonic signal based on the ultrasonic speaker after the angle adjustment, so as to obtain a distance parameter between a microphone inside the earphone device, the ultrasonic speaker, and a preset eardrum of a human ear.
The specific implementation of the feedback noise reduction apparatus of the headphone device of the present invention is basically the same as the feedback noise reduction method of the headphone device in each embodiment, and will not be described herein again.
In addition, the embodiment of the invention also provides an earphone device, which comprises a structural shell, a communication module, a main control module (such as a Micro Control Unit (MCU)), an ultrasonic loudspeaker, a feedback noise reduction microphone, a memory and the like. The main control module can comprise a microprocessor, an audio decoding unit, a power supply and power supply management unit, a sensor and other active or passive devices required by the system and the like (which can be replaced, deleted or added according to actual functions), so that the functions of receiving and playing wireless audio are realized.
The memory of the earphone device of the present invention may store a feedback noise reduction program of the earphone device, and the feedback noise reduction program of the earphone device may be called by a microprocessor in the earphone device and may perform the following operations:
transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic loudspeaker and a preset human ear drum membrane in the earphone device;
calculating a loudness attenuation parameter of a sound signal propagating the headset device according to the distance parameter;
and compensating the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
Optionally, the loudness attenuation parameter of the sound signal of the headphone apparatus includes: the loudness attenuation amount of the sound transmitted by the ultrasonic loudspeaker to the microphone and the loudness loss amount of the sound transmitted by the ultrasonic loudspeaker to the tympanic membrane of the preset human ear are measured; the feedback noise reduction program of the headphone device may be invoked by a microprocessor in the headphone device to perform the following further operations:
compensating the propagation loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness attenuation amount, and compensating the loudness loss of the counteracting signal output by the ultrasonic loudspeaker according to the loudness loss amount;
and determining the noise reduction compensation amount of the output offset signal of the ultrasonic loudspeaker according to the compensated propagation loss and loudness loss, and outputting the offset signal according to the noise reduction compensation amount through the ultrasonic loudspeaker to perform feedback noise reduction on the earphone equipment.
Optionally, the feedback noise reduction program of the headphone apparatus may be invoked by a microprocessor in the headphone apparatus to further perform the following operations:
simulating the propagation condition of the sound signal according to the distance parameter and the preset angle parameter;
outputting a sound signal based on the propagation condition in a preset simulated human ear environment to perform propagation test;
and calculating the loudness attenuation quantity of the sound transmitted from the ultrasonic loudspeaker to the microphone based on the transmission test.
Optionally, the feedback noise reduction program of the headphone device may be invoked by a microprocessor in the headphone device to further perform the following operations:
detecting a first intensity of a sound signal received by the microphone and detecting a second intensity of the sound signal received by the eardrum of the preset human ear in the propagation test;
and calculating the loudness loss amount of the sound transmitted by the ultrasonic loudspeaker to the tympanic membrane of the preset human ear according to the first intensity and the second intensity.
Optionally, the preset human eardrum comprises: simulating a human eardrum in a human ear and an eardrum of an ear of an actual user, the feedback noise reduction program of the earphone device being invokable by the microprocessor in the earphone device to perform the following further operations:
when the earphone device is determined to be worn on the simulated human ear, the ultrasonic loudspeaker emits an ultrasonic signal to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic speaker and the eardrum of the human ear in the earphone device;
or when the earphone device is determined to be worn to the ear of the actual user, transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain a distance parameter among a microphone inside the earphone device, the ultrasonic loudspeaker and the eardrum of the ear of the actual user.
Optionally, the feedback noise reduction program of the headphone apparatus may be invoked by a microprocessor in the headphone apparatus to further perform the following operations:
in the distance measurement, detecting angle information of an ultrasonic signal emitted by the ultrasonic loudspeaker and first time information of the ultrasonic signal transmitted into the microphone after being reflected by the tympanic membrane of the preset human ear;
and calculating to obtain distance parameters among the microphone, the ultrasonic loudspeaker and the preset human eardrum according to the angle information, the first time information and second time information of the ultrasonic signal directly transmitted into the microphone.
Optionally, the feedback noise reduction program of the headphone device may be invoked by a microprocessor in the headphone device to further perform the following operations:
and carrying out angle adjustment of the ultrasonic loudspeaker by transmitting an ultrasonic signal through the ultrasonic loudspeaker, and executing the step of carrying out distance measurement by transmitting the ultrasonic signal through the ultrasonic loudspeaker on the basis of the ultrasonic loudspeaker after the angle adjustment to obtain a microphone in the earphone equipment, the ultrasonic loudspeaker and a preset distance parameter between the eardrums of the human ears.
Furthermore, the present invention also provides a computer readable storage medium, on which a feedback noise reduction program of a headphone apparatus is stored, and when the feedback noise reduction program of the headphone apparatus is executed by a processor, the steps of the feedback noise reduction method of the headphone apparatus of the present invention are implemented as described above.
The embodiments of the headphone device and the computer-readable storage medium of the present invention can refer to the embodiments of the feedback noise reduction method of the headphone device of the present invention, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solution of the present invention or the portions contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (which may be a headset device, a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the present specification and drawings, or used directly or indirectly in other related fields, are included in the scope of the present invention.
Claims (10)
1. A feedback noise reduction method of an earphone device, wherein the feedback noise reduction method of the earphone device is applied to an earphone device in which an ultrasonic speaker is internally provided, and the method comprises:
transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic loudspeaker and a preset human ear drum membrane in the earphone device;
calculating a loudness attenuation parameter of a sound signal propagating the headset device according to the distance parameter;
and compensating the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
2. The method of feedback noise reduction for a headphone device as defined in claim 1, wherein the loudness attenuation parameters for the sound signal of the headphone device comprise: the loudness attenuation amount of the sound transmitted by the ultrasonic loudspeaker to the microphone and the loudness loss amount of the sound transmitted by the ultrasonic loudspeaker to the tympanic membrane of the preset human ear are respectively calculated;
the step of compensating the cancellation signal output by the ultrasonic speaker according to the loudness attenuation parameter to perform feedback noise reduction of the earphone device includes:
compensating for propagation loss of the cancellation signal output by the ultrasonic speaker according to the loudness attenuation amount, and compensating for loudness loss of the cancellation signal output by the ultrasonic speaker according to the loudness loss amount;
and determining a noise reduction compensation amount of the output offset signal of the ultrasonic loudspeaker according to the compensated propagation loss and loudness loss, and outputting the offset signal according to the noise reduction compensation amount through the ultrasonic loudspeaker to perform feedback noise reduction of the earphone equipment.
3. The method of feedback noise reduction for a headphone device as recited in claim 1, wherein propagating loudness attenuation parameters for a sound signal of the headphone device comprises: the step of calculating a loudness attenuation parameter of the sound signal propagating the earpiece device as a function of the distance parameter includes:
simulating the propagation condition of the sound signal according to the distance parameter and the preset angle parameter;
outputting a sound signal based on the propagation condition in a preset simulated human ear environment to perform a propagation test;
and calculating the loudness attenuation quantity of the sound transmitted to the microphone by the ultrasonic loudspeaker based on the transmission test.
4. The method of claim 3, wherein propagating loudness attenuation parameters of a sound signal of the headphone device comprises: the step of calculating a loudness attenuation parameter of the sound signal propagating through the earphone device according to the distance parameter further includes:
detecting a first intensity of a sound signal received by the microphone and detecting a second intensity of the sound signal received by the eardrum of the preset human ear in the propagation test;
and calculating the loudness loss amount of the sound transmitted by the ultrasonic loudspeaker to the tympanic membrane of the preset human ear according to the first intensity and the second intensity.
5. The feedback noise reduction method of an earphone device as recited in claim 1, wherein the presetting of the eardrum of the human ear comprises: the step of simulating a human ear tympanic membrane in a human ear and a tympanic membrane of an ear of an actual user, and performing distance measurement by transmitting an ultrasonic signal through the ultrasonic speaker to calculate a distance parameter between a microphone inside the earphone device, the ultrasonic speaker and a preset human ear tympanic membrane, includes:
when the earphone device is determined to be worn on the simulated human ear, transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain a distance parameter among a microphone inside the earphone device, the ultrasonic loudspeaker and the human ear drum;
or when the earphone device is determined to be worn to the ear of the actual user, transmitting an ultrasonic signal through the ultrasonic loudspeaker to perform distance measurement so as to calculate and obtain a distance parameter between a microphone inside the earphone device, the ultrasonic loudspeaker and the eardrum of the ear of the actual user.
6. The feedback noise reduction method of the earphone device according to any one of claims 1 to 5, wherein the step of calculating the distance parameter between the microphone, the ultrasonic speaker and the predetermined ear drum inside the earphone device comprises:
detecting angle information of an ultrasonic signal emitted by the ultrasonic loudspeaker and first time information of the ultrasonic signal transmitted into the microphone after being reflected by the tympanic membrane of the preset human ear in the distance measurement;
and calculating to obtain distance parameters among the microphone, the ultrasonic loudspeaker and the preset human eardrum according to the angle information, the first time information and second time information of the ultrasonic signal directly transmitted into the microphone.
7. A feedback noise reduction method for a headphone apparatus according to any one of claims 1 to 5, characterized in that the method further comprises:
and carrying out angle adjustment of the ultrasonic loudspeaker by transmitting an ultrasonic signal through the ultrasonic loudspeaker, and executing the step of carrying out distance measurement by transmitting the ultrasonic signal through the ultrasonic loudspeaker on the basis of the ultrasonic loudspeaker after the angle adjustment to obtain a distance parameter between a microphone in the earphone device, the ultrasonic loudspeaker and a preset ear drum.
8. A feedback noise reduction apparatus of an earphone device, wherein the feedback noise reduction apparatus of the earphone device is applied to an earphone device in which an ultrasonic speaker is internally provided, the apparatus comprising:
the distance measurement module is used for transmitting an ultrasonic signal through the ultrasonic loudspeaker to carry out distance measurement so as to calculate and obtain distance parameters among a microphone, the ultrasonic loudspeaker and a preset ear drum membrane in the earphone device;
the attenuation calculation module is used for calculating loudness attenuation parameters of sound signals propagating the earphone equipment according to the distance parameters;
and the noise reduction module is used for compensating the offset signal output by the ultrasonic loudspeaker according to the loudness attenuation parameter so as to perform feedback noise reduction of the earphone equipment.
9. An earphone device, characterized in that the earphone device comprises: memory, processor and a feedback noise reduction program of a headphone apparatus stored on the memory and executable on the processor, the feedback noise reduction program of a headphone apparatus, when executed by the processor, implementing the steps of the feedback noise reduction method of a headphone apparatus as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a feedback noise reduction program of a headphone apparatus, which when executed by a processor implements the steps of the feedback noise reduction method of a headphone apparatus as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462339.8A CN114928785A (en) | 2022-04-28 | 2022-04-28 | Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462339.8A CN114928785A (en) | 2022-04-28 | 2022-04-28 | Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114928785A true CN114928785A (en) | 2022-08-19 |
Family
ID=82806570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210462339.8A Pending CN114928785A (en) | 2022-04-28 | 2022-04-28 | Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114928785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117221783A (en) * | 2023-11-07 | 2023-12-12 | 深圳市旭声科技有限公司 | Noise reduction method of Bluetooth headset noise reduction system and storage medium |
-
2022
- 2022-04-28 CN CN202210462339.8A patent/CN114928785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117221783A (en) * | 2023-11-07 | 2023-12-12 | 深圳市旭声科技有限公司 | Noise reduction method of Bluetooth headset noise reduction system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020019821A1 (en) | Microphone hole-blockage detection method and related product | |
| WO2022048334A1 (en) | Testing method and apparatus, earphones, and readable storage medium | |
| CN106851460B (en) | Earphone and sound effect adjusting control method | |
| US11595764B2 (en) | Tuning method, manufacturing method, computer-readable storage medium and tuning system | |
| CN204721589U (en) | Bone conduction sound propagation device | |
| CN114071308B (en) | Headset self-adaptive tuning method and device, headset and readable storage medium | |
| US20220335923A1 (en) | Signal processing apparatus, method, and system | |
| CN114928785A (en) | Feedback noise reduction method and device for earphone equipment, earphone equipment and storage medium | |
| CN104936096A (en) | Bone-conduction sound transmission device and method | |
| WO2023070920A1 (en) | Earphone frequency response calibration method and apparatus, and earphone device and storage medium | |
| US20240171896A1 (en) | Earphone and earphone control method | |
| US20240078991A1 (en) | Acoustic devices and methods for determining transfer functions thereof | |
| CN111464930B (en) | Howling detection method and device for earphone and storage medium | |
| CN114333886A (en) | Audio processing method and device, electronic equipment and storage medium | |
| US20190191236A1 (en) | System and Method for Configuring Audio Signals to Compensate for Acoustic Changes of the Ear | |
| CN219204674U (en) | Wearing audio equipment with human ear characteristic detection function | |
| CN114885240A (en) | Noise reduction method and device, earphone equipment and storage medium | |
| CN113132846B (en) | Active noise reduction method and device for earphone and semi-in-ear active noise reduction earphone | |
| CN111683322A (en) | Feedforward noise reduction earphone, noise reduction method, system, equipment and computer storage medium | |
| WO2022121743A1 (en) | Method for optimizing functions of hearables and hearables | |
| RU2803486C1 (en) | Systems and methods for determining the state of hearing aid with bone conduction | |
| CN116744169B (en) | Earphone device, sound signal processing method and wearing fit testing method | |
| CN117641198A (en) | Far-field silencing method, broadcasting equipment and storage medium | |
| CN111213390B (en) | Sound converter | |
| CN117939343A (en) | Earphone, vibration measuring method and computer readable medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |