CN107017001B - Wearable device audio signal output processing method and wearable device - Google Patents
Wearable device audio signal output processing method and wearable device Download PDFInfo
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- H—ELECTRICITY
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- 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
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Abstract
The invention discloses an output processing method of an audio signal of wearing equipment and the wearing equipment, wherein the method comprises the following steps: acquiring an audio signal to be output of the wearable device; acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearable device; carrying out phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator; outputting the target audio signal to the corresponding bone conduction vibrators, controlling all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into vibration signals and transmitting the vibration signals through skin and bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium; the method is used for reducing the attenuation of the audio signal in the transmission process, ensuring the tone quality, preventing sound leakage and protecting the privacy of users.
Description
Technical Field
The invention relates to the technical field of wearable equipment, in particular to an output processing method of an audio signal of the wearable equipment and the wearable equipment.
Background
Wearable devices (such as wristlet smartphones, smartwatches, smartbands, etc.) are increasingly enjoyed and accepted by people. But wearing equipment is in the in-process such as conversation, broadcast music, adopts the mode of putting out the sound usually, when putting out the sound, may disturb others, also may lead to user's privacy to be eavesdropped by peripheral people, is unfavorable for protecting user privacy safety, has reduced user's use and has experienced the sense.
Disclosure of Invention
The embodiment of the invention discloses an output processing method of an audio signal of wearable equipment and the wearable equipment, which are used for reducing the attenuation of the audio signal in the transmission process, ensuring the tone quality, preventing sound leakage and protecting the privacy of a user.
The invention discloses a first aspect of a method for outputting and processing an audio signal of a wearable device, which comprises the following steps:
acquiring an audio signal to be output of the wearable device;
acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearable device;
carrying out phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator;
and outputting the target audio signal to a corresponding bone conduction vibrator, controlling all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through skin and a bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
As an optional implementation manner, in the first aspect of the present invention, the performing phase adjustment on the audio signal to be output based on the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator includes:
carrying out phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a primary audio signal corresponding to each bone conduction oscillator;
and performing digital-to-analog conversion on the primary audio signal corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator.
As an optional implementation manner, in the first aspect of the present invention, after acquiring the audio signal to be output of the wearable device, and before acquiring the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device, the method further includes:
detecting whether the wearable device is in a worn state;
and when the wearable device is in a worn state, executing a step of acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
As an optional implementation manner, in the first aspect of the present invention, after acquiring the audio signal to be output of the wearable device, and before acquiring the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device, the method further includes:
detecting a hand action behavior of the wearable device;
judging whether the hand action behaviors are matched with prestored action behaviors for switching the playing mode of the wearable device to a bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium;
and if so, executing the step of obtaining the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
As an optional implementation manner, in the first aspect of the present invention, the acquiring an audio signal to be output of a wearable device includes:
monitoring whether the wearable device receives an unread message prompt;
when it is monitored that the wearable device receives an unread message prompt, receiving a reading instruction which is input by a user and aims at the unread message indicated by the unread message prompt;
and converting the unread message indicated by the unread message reminder into voice information in response to the reading instruction so as to obtain an audio signal to be output of the wearable device.
A second aspect of the present invention discloses a wearable device, which may include:
the acquisition unit is used for acquiring an audio signal to be output of the wearable device;
the phase adjusting unit is used for acquiring a phase adjusting parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device;
the phase adjusting unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a target audio signal corresponding to each bone conduction oscillator;
and the control unit is used for outputting the target audio signal to the corresponding bone conduction vibrator, controlling all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through skin and bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
As an optional implementation manner, in the second aspect of the present invention, the phase adjustment unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, and a manner of obtaining the target audio signal corresponding to each bone conduction oscillator specifically includes:
the phase adjusting unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a primary audio signal corresponding to each bone conduction oscillator; and performing digital-to-analog conversion on the primary audio signal corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator.
As an optional implementation manner, in the second aspect of the present invention, the wearable device further includes:
the wearing detection unit is used for detecting whether the wearable equipment is in a worn state or not after the acquisition unit acquires the audio signal to be output of the wearable equipment and before the phase adjustment unit acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable equipment;
the phase adjustment unit is further configured to, when the wearing detection unit determines that the wearing device is in a worn state, perform acquisition of a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearing device.
As an optional implementation manner, in the second aspect of the present invention, the wearable device further includes:
the action detection unit is used for detecting a hand action of the wearable device after the acquisition unit acquires the audio signal to be output of the wearable device and before the phase adjustment unit acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device;
the action judging unit is used for judging whether the hand action behaviors are matched with prestored action behaviors for switching the playing mode of the wearable device to the bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium;
the phase adjustment unit is further configured to, if the determination result of the action determination unit is yes, perform acquisition of a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
As an optional implementation manner, in the second aspect of the present invention, the obtaining unit includes:
the monitoring unit is used for monitoring whether the wearable device receives an unread message prompt;
the receiving unit is used for receiving a reading instruction which is input by a user and aims at the unread message indicated by the unread message prompt when the monitoring unit monitors that the wearable device receives the unread message prompt;
the conversion unit is used for responding to the reading instruction and converting the unread message indicated by the unread message reminder into voice information so as to obtain an audio signal to be output of the wearable device.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, after the audio signal to be output of the wearable device is acquired, the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device is acquired, then the phase adjustment is performed on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction vibrator to acquire the target audio signal corresponding to each bone conduction vibrator, the target audio signal is output to the corresponding bone conduction vibrator, all the bone conduction vibrators are controlled to simultaneously convert the corresponding target audio signal into the vibration signal and transmit the vibration signal through skin and bone medium, the vibration signals of all the bone conduction vibrators acquire the same phase at a certain position in the process of transmitting through skin and bone medium, then signal superposition (beam forming is generated) is performed to increase the signal energy and reduce the attenuation caused by the signal in the process of transmitting through skin or bone medium, the sound quality is ensured, and further, sound leakage can be prevented by transmitting the audio signals through skin and bone media, so that the privacy and safety of a user are protected.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of an output processing method of an audio signal of a wearable device according to an embodiment of the present invention;
FIG. 2 is a schematic view of an application of the wearable device disclosed in the embodiment of the present invention;
fig. 3 is another schematic flow chart of an output processing method of an audio signal of a wearable device according to an embodiment of the disclosure;
FIG. 4 is another schematic structural diagram of a wearable device according to an embodiment of the disclosure;
FIG. 5 is another schematic structural diagram of a wearable device according to an embodiment of the disclosure;
FIG. 6 is another schematic structural diagram of a wearable device according to an embodiment of the disclosure;
fig. 7 is another schematic structural diagram of the wearable device disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, of embodiments of the present invention are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses an output processing method of an audio signal of wearable equipment, which is used for reducing the attenuation of the audio signal in the transmission process, ensuring the tone quality, preventing sound leakage and protecting the privacy of a user. The embodiment of the invention also correspondingly discloses the wearable equipment.
The wearable device related to the embodiment of the invention can be an intelligent wearable mobile phone, an intelligent watch, an intelligent bracelet and the like, and is not particularly limited herein. The technical solution of the present invention will be described in detail with reference to specific embodiments from the perspective of wearable devices.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating an output processing method of an audio signal of a wearable device according to an embodiment of the present invention; as shown in fig. 1, an output processing method of an audio signal of a wearable device may include:
101. the wearable device acquires an audio signal to be output.
As an optional implementation manner, the acquiring, by the wearable device, the audio signal to be output specifically includes:
the wearable device monitors whether the wearable device receives an unread message prompt;
when the unread message prompt is monitored to be received, the wearable device receives a reading instruction which is input by a user and aims at the unread message indicated by the unread message prompt;
the wearable device responds to the reading instruction to convert the unread message indicated by the unread message reminder into voice information so as to obtain an audio signal to be output of the wearable device.
In the above embodiment, the wearable device has a function of converting the unread message into the voice message to be played, and the wearable device monitors whether the unread message is received in real time, and converts the unread message into the voice message when the unread message is received, so as to serve as the audio signal to be output of the wearable device. The unread messages are converted into the voice messages to be played, so that both hands of a user can be released, the content of the unread messages can be timely known under the condition that the user inconveniently operates the wearable device, and the use experience of the user using the wearable device is improved.
As an optional implementation manner, the acquiring, by the wearable device, the audio signal to be output specifically includes: the wearable device collects the sound of the microphone in real time (for example, when the wearable device collects the voice of the other party during a call), and the voice is used as an audio signal to be output of the wearable device. In this embodiment, the wearable device can use the call voice as the audio signal to be output.
As an optional implementation manner, the acquiring, by the wearable device, the audio signal to be output specifically includes: the wearable device acquires the multimedia signal as an audio signal to be output of the wearable device.
102. The wearable device obtains phase adjustment parameters corresponding to each bone conduction vibrator of a bone conduction vibrator matrix arranged on the wearable device.
In the embodiment of the invention, the wearable device has two sound playing modes, wherein one of the two sound playing modes is a playing mode; the second is the bone conduction mode. The external speaker is used for realizing the external mode, and the bone conduction vibrator is used for realizing the bone conduction mode. When a user wears the wearable device, for example, on a wrist, the bone conduction vibrators are tightly attached to the bones of the wrist or the skin of the soft tissues of the wrist, so that the technical scheme of the invention is realized.
As an optional implementation manner, after the wearable device acquires the audio signal to be output in step 101, and before the wearable device acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix disposed on the wearable device in step 102, the method further includes:
the wearable equipment detects whether the wearable equipment is in a worn state;
when the wearable device is in a worn state, the wearable device acquires phase adjustment parameters corresponding to each bone conduction vibrator of a bone conduction vibrator matrix arranged on the wearable device.
As an optional implementation manner, the detecting, by the wearable device, whether the wearable device is in the worn state specifically includes: the wearable device detects a distance value between the wearable device and an external obstacle through an infrared detection module located in a position, in contact with the skin, of the wearable device; when the distance value is smaller than or equal to a preset distance value, determining that the wearable device is in a worn state; and when the distance value is larger than the preset distance value, determining that the wearing equipment is in an unworn state.
As an optional implementation manner, the detecting, by the wearable device, whether the wearable device is in the worn state specifically includes: the wearable device detects the temperature value of an external obstacle through a temperature detection module located at a position, in the wearable device, in contact with the skin; judging whether the temperature value of the external obstacle is in a preset temperature range or not, and if so, determining that the wearable device is in a worn state; and if the temperature is not in the preset temperature range, determining that the wearable device is not in the worn state.
As an optional implementation manner, the detecting, by the wearable device, whether the wearable device is in the worn state specifically includes: the wearable device detects a distance value between the wearable device and an external obstacle through an infrared detection module located in a position, in contact with the skin, of the wearable device; the wearable device judges whether the distance value between the wearable device and the external obstacle is smaller than or equal to a preset distance value, and if the distance value is larger than the preset distance value, the wearable device is determined not to be in a worn state; if the distance value is smaller than or equal to the preset distance value, detecting the temperature value of the external obstacle through a temperature detection module located at the position, in contact with the skin, of the wearable device; and judging whether the temperature value of the external obstacle is in a preset temperature range, if so, determining that the wearable device is in a worn state, and if not, determining that the wearable device is not in the worn state.
As an optional implementation manner, after the wearable device acquires the audio signal to be output in step 101, and before the wearable device acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix disposed on the wearable device, the method further includes:
the wearable equipment detects the hand action behavior generated by the wearable equipment; judging whether the detected hand action behaviors are matched with prestored action behaviors for switching the playing mode of the wearable device to the bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium; and if so, the wearable device acquires the phase adjustment parameters corresponding to each bone conduction vibrator of the bone conduction vibrator matrix arranged on the wearable device. In this embodiment, a user sets an action behavior for switching the play mode of the wearable device to the bone conduction mode in the wearable device, and after acquiring an audio signal to be output, if a matching pre-stored action behavior is detected, step 102 is executed; and if the action behavior matched with the pre-stored action behavior is not detected, playing the audio signal to be output through the play-out mode.
The pre-stored action behavior for switching the playing mode of the wearable device to the bone conduction mode may be that an arm is placed horizontally to be erected on the arm, or the arm is erected and an index finger is erected, and the like.
103. The wearable device performs phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a target audio signal corresponding to each bone conduction oscillator.
As an optional implementation manner, the wearable device performs phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, to obtain a target audio signal corresponding to each bone conduction oscillator, including:
the wearable device performs phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a primary audio signal corresponding to each bone conduction oscillator; the wearable device performs digital-to-analog conversion on the primary audio signal corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator.
The wearable device directly collects digital signals of a microphone, multimedia signals played by a multimedia application program in the wearable device, voice information obtained by converting unread messages and the like, and after the wearable device performs phase adjustment on audio signals to be output, primary audio signals are obtained and then are further converted into analog signals, so that target audio signals are obtained.
104. The wearable device outputs the target audio signal to the corresponding bone conduction vibrators, and controls all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into vibration signals and transmit the vibration signals through skin and bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
The bone conduction vibrator converts a target audio signal into a vibration signal, the vibration signal is transmitted to fingers through skin, bone medium and subcutaneous tissues, meanwhile, the fingers (usually index fingers) abut against ears or extend into the ears, so that a closed sound cavity is formed, the vibration signal transmitted by the fingers is received, and the vibration signal passes through the skull, a bone labyrinth, inner ear lymph fluid, a spiral organ and auditory nerves and reaches the auditory center of cerebral cortex, so that the effect of clear sound can be achieved, the aim of protecting the privacy of a user is fulfilled, the sound leakage is prevented, the vibration signal is intercepted by surrounding people, and the working principle of transmitting the sound (namely, a bone conduction mode) by the bone conduction vibrator is adopted. In the embodiment of the invention, before the target audio signal is transmitted to the bone conduction vibrator, phase adjustment is firstly carried out, so that the phases of a plurality of target audio signals are the same when the target audio signal entering the bone conduction vibrator meets at a certain point after the target audio signal is converted into a vibration signal and passes through corresponding distances respectively when the target audio signal is transmitted in skin and bone media, thereby generating beam forming, superposing signal energy, ensuring the tone quality of the audio signal and solving the problem of attenuation of the audio signal in the transmission process.
In the embodiment of the invention, after the audio signal to be output of the wearable device is acquired, the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device is acquired, then the phase adjustment is performed on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction vibrator to acquire the target audio signal corresponding to each bone conduction vibrator, the target audio signal is output to the corresponding bone conduction vibrator, all the bone conduction vibrators are controlled to simultaneously convert the corresponding target audio signal into the vibration signal and transmit the vibration signal through skin and bone medium, the vibration signals of all the bone conduction vibrators acquire the same phase at a certain position in the process of transmitting through skin and bone medium, then signal superposition (beam forming is generated) is performed to increase the signal energy and reduce the attenuation caused by the signal in the process of transmitting through skin or bone medium, the sound quality is ensured, and further, sound leakage can be prevented by transmitting the audio signals through skin and bone media, so that the privacy and safety of a user are protected.
Example two
Referring to fig. 2, fig. 2 is a schematic application diagram of a wearable device according to an embodiment of the disclosure; in fig. 2, a wearable device disclosed in an embodiment of the present invention may include: the bone conduction matrix comprises a Micro Control Unit (MCU), a phase Control matrix, a digital-to-analog conversion matrix, a bone conduction driving matrix, a bone conduction vibrator matrix and the like, wherein the phase Control matrix comprises n phase controllers, the digital-to-analog conversion matrix comprises n digital-to-analog converters, the bone conduction driving matrix comprises n bone conduction drivers, and the bone conduction vibrator matrix comprises n bone conduction vibrators. The phase control matrix, the digital-to-analog conversion matrix, the bone conduction driving matrix, and the bone conduction vibrator matrix are in a one-to-one implicit relationship, as shown in fig. 2 (in fig. 2, the value of n is 4 for example).
When the wearable device is worn on the wrist, when vibration signals output by the bone conduction vibrators meet in skin and bone medium, transmission distances of the vibration signals output by the bone conduction vibrators may be different or partially the same, but waveform shaping of the vibration signals output by all the bone conduction vibrators occurs at a certain point on the skin or the bone medium after passing through the respective transmission distances. Assuming that the certain point is O, the transmission distance from the bone conduction transducers a to O in fig. 2 is S1, the transmission distance from the bone conduction transducers B to O is S2, the transmission distance from the bone conduction transducers C to O is S3, and the transmission distance from the bone conduction transducers D to O is S4, and the phases of the vibration signals output from the respective bone conduction transducers meet at the O position are the same. In the embodiment of the invention, in order to make the phases of the vibration signals output by the bone conduction vibrators at the position O identical (the phases are identical, and the wave crests and the wave troughs of the vibration signals at the spatial positions are superposed), energy is added, and in a phase control matrix, the adjustment of the phase of the audio signal to be output is completed. Assuming that the frequency of the audio signal to be output is F, the corresponding wavelength is L, and the frequency F is divided into K segments, the wavelength corresponding to each segment is LK1, LK2, and-LKK, respectively, where K is a positive integer greater than or equal to 1. Each phase controller needs to complete phase shift for K times, that is, corresponding to each frequency band, phase shift is performed once, so that K frequency bands need to be phase shifted for K times altogether, and when phase shift is performed on each frequency band, the phase shift requirement of the center frequency of each frequency band needs to be met, and the phase shift formula is as follows:
(M.P) ═ S/R; where S is the distance, R is the wavelength, M is the integer portion, and P is the fractional portion.
Taking the bone conduction vibrator a as an example, the transmission distance from the bone conduction vibrator a to O is S1, and the phase controller corresponding to the bone conduction vibrator a performs phase adjustment as follows:
【M.P】＝S1/LKK。
thus, the phase adjustment parameters corresponding to each bone conduction oscillator, including the transmission distance S from the bone conduction oscillator to the meeting point, the wavelength corresponding to each frequency band, and the like, can be obtained, and then the phase adjustment parameters are stored in the phase controller.
Referring to fig. 3 in conjunction with fig. 2, fig. 3 is another schematic flow chart of an output processing method of an audio signal of a wearable device according to an embodiment of the present invention; as shown in fig. 3, an output processing method of an audio signal of a wearable device may include:
301. the wearable device obtains the audio signal to be output through the MCU.
302. The MCU respectively inputs the audio signal to be output to each phase controller in the phase control matrix, and each phase controller is utilized to carry out phase adjustment on the audio signal to be output according to preset phase adjustment parameters, so as to obtain a primary audio signal corresponding to each phase controller.
The phase adjustment parameters include the transmission distance S from the bone conduction vibrator to the meeting point (i.e., a certain point in the skin or bone medium related to the embodiment of the present invention), and the wavelength corresponding to each frequency band, and then the phase adjustment is performed on the audio signal to be output.
303. The phase controller outputs the primary audio signal to an associated digital-to-analog converter, which converts the primary audio signal to a target audio signal.
The digital-to-analog conversion is to convert discrete digital quantity into analog quantity with variable connection.
304. The digital-to-analog converter outputs the target audio signal to the related bone conduction driver, and the bone conduction driver is utilized to output the target audio signal to the bone conduction vibrator related to the bone conduction driver in the bone conduction vibrator matrix.
305. The bone conduction driving controls the related bone conduction vibrators to simultaneously convert the received target audio signals into vibration signals and transmit the vibration signals through skin and bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
In the embodiment of the invention, the vibration signals of the bone conduction vibrators acquire the same phase at a certain position in the process of being transmitted through the skin and the bone medium, and then signal superposition (beam forming) is carried out, so that the signal energy is increased, the attenuation of the signals in the process of being transmitted through the skin or the bone medium is reduced, the sound quality is ensured, and further, the sound leakage can be prevented and the privacy and the safety of a user can be protected by transmitting the audio signals through the skin and the bone medium.
EXAMPLE III
Referring to fig. 4, fig. 4 is another schematic structural diagram of the wearable device disclosed in the embodiment of the present invention; as shown in fig. 4, a wearable device may include:
the acquiring unit 410 is used for acquiring an audio signal to be output of the wearable device;
the phase adjustment unit 420 is configured to obtain a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearable device;
the phase adjustment unit 420 is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a target audio signal corresponding to each bone conduction oscillator;
the control unit 430 is configured to output the target audio signal to the corresponding bone conduction vibrator, and control all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through the skin and the bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superimposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
In the embodiment of the present invention, after the obtaining unit 410 obtains the audio signal to be output of the wearable device, the phase adjusting unit 420 obtains a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device, then performs phase adjustment on the audio signal to be output based on the phase adjustment parameter corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator, the control unit 430 outputs the target audio signal to the corresponding bone conduction vibrator, and controls all the bone conduction vibrators to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through skin and bone medium, while the vibration signals of all the bone conduction vibrators obtain the same phase at a certain position in the process of transmitting through skin and bone medium, and then performs signal superposition (beam forming), therefore, signal energy is increased, attenuation of signals caused in the transmission process of skin or bone media is reduced, sound quality is guaranteed, further, sound leakage can be prevented by transmitting audio signals through the skin and the bone media, and privacy and safety of users are protected.
As an optional implementation manner, the phase adjustment unit 420 is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, and a manner of obtaining the target audio signal corresponding to each bone conduction oscillator specifically includes:
the phase adjustment unit 420 is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a primary audio signal corresponding to each bone conduction oscillator; and D/A conversion is carried out on the primary audio signal corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator.
Example four
Referring to fig. 5, fig. 5 is another schematic structural diagram of the wearable device disclosed in the embodiment of the present invention; the wearable device shown in fig. 5 is obtained by performing optimization on the basis of the wearable device shown in fig. 4, and the wearable device shown in fig. 5 further includes:
the wearing detection unit 510 is configured to detect whether the wearable device is in a worn state after the obtaining unit 410 obtains the audio signal to be output of the wearable device and before the phase adjustment unit 420 obtains the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device;
the phase adjustment unit 420 is further configured to, when the wearing detection unit 510 determines that the wearing device is in a worn state, perform obtaining a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearing device.
As an optional implementation manner, the manner for detecting whether the wearing detection unit 510 is in the worn state is specifically: the wearing detection unit 510 is configured to detect a distance value between the wearable device and an external obstacle through an infrared detection module located at a position of the wearable device that is in contact with the skin; when the distance value is smaller than or equal to a preset distance value, determining that the wearable device is in a worn state; and when the distance value is larger than the preset distance value, determining that the wearing equipment is in an unworn state.
As an optional implementation manner, the manner for detecting whether the wearing detection unit 510 is in the worn state is specifically: the wearing detection unit 510 is configured to detect a temperature value of an external obstacle through a temperature detection module located at a position of the wearing apparatus that is in contact with the skin; judging whether the temperature value of the external obstacle is in a preset temperature range or not, and if so, determining that the wearable device is in a worn state; and if the temperature is not in the preset temperature range, determining that the wearable device is not in the worn state.
As an optional implementation manner, the wearing detection unit 510 is configured to detect whether it is in a worn state specifically as follows: the wearing detection unit 510 is configured to detect a distance value between the wearable device and an external obstacle through an infrared detection module located at a position of the wearable device that is in contact with the skin; judging whether the distance value between the wearable device and the external obstacle is smaller than or equal to a preset distance value or not, and if the distance value is larger than the preset distance value, determining that the wearable device is not in a worn state; if the distance value is smaller than or equal to the preset distance value, detecting the temperature value of the external obstacle through a temperature detection module located at the position, in contact with the skin, of the wearable device; and judging whether the temperature value of the external obstacle is in a preset temperature range, if so, determining that the wearable device is in a worn state, and if not, determining that the wearable device is not in the worn state.
EXAMPLE five
Referring to fig. 6, fig. 6 is another schematic structural diagram of a wearable device disclosed in the embodiment of the present invention; the wearable device shown in fig. 6 is obtained by performing optimization based on the wearable device shown in fig. 4, and the wearable device shown in fig. 6 further includes:
the action detection unit 610 is used for detecting a hand action occurring on the wearable device after the acquisition unit 410 acquires the audio signal to be output of the wearable device and before the phase adjustment unit 420 acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device;
a motion determination unit 620, configured to determine whether the hand motion behavior matches a pre-stored motion behavior for switching the play mode of the wearable device to the bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium;
the phase adjustment unit 420 is further configured to, when the determination result of the action determination unit 620 is yes, perform acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
EXAMPLE six
Referring to fig. 7, fig. 7 is another schematic structural diagram of a wearable device disclosed in the embodiment of the present invention; the wearable device shown in fig. 7 is obtained by performing optimization based on the wearable device shown in fig. 4, and in the wearable device shown in fig. 7, the obtaining unit 410 includes:
the monitoring unit 710 is configured to monitor whether the wearable device receives an unread message alert;
the receiving unit 720 is configured to receive, when the monitoring unit 710 monitors that the wearable device receives the unread message reminder, a reading instruction for the unread message indicated by the unread message reminder, which is input by the user;
the converting unit 730 is configured to convert the unread message indicated by the unread message reminder into voice information in response to the reading instruction to obtain an audio signal to be output of the wearable device.
In the above embodiment, the wearable device has a function of converting the unread message into the voice message to be played, and the obtaining unit 410 is configured to monitor whether the unread message is received, and convert the unread message into the voice message when the unread message is received, so as to serve as the audio signal to be output of the wearable device. The unread messages are converted into the voice messages to be played, so that both hands of a user can be released, the content of the unread messages can be timely known under the condition that the user inconveniently operates the wearable device, and the use experience of the user using the wearable device is improved.
As an optional implementation manner, the manner for acquiring the audio signal to be output by the acquiring unit 410 is specifically as follows: the obtaining unit 410 is configured to collect sound of a microphone in real time (for example, when a call is made, the wearable device collects sound of a call of an opposite party), and the sound is used as an audio signal to be output of the wearable device. In this embodiment, the wearable device can use the call voice as the audio signal to be output.
As an optional implementation manner, the manner for acquiring the audio signal to be output by the acquiring unit 410 is specifically as follows: the obtaining unit 410 is configured to obtain a multimedia signal as an audio signal to be output of the wearable device.
Through above-mentioned wearing equipment, can reduce the signal and at the skin or the decay that bone medium transmission in-process caused, ensure sound quality, further, can prevent sound leakage through skin and bone medium transmission audio signal, protect user's privacy safety.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by instructions associated with a program, which may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), compact disc-Read-Only Memory (CD-ROM), or other Memory, magnetic disk, magnetic tape, or magnetic tape, Or any other medium which can be used to carry or store data and which can be read by a computer.
The above detailed description is provided for the output processing method of the audio signal of the wearable device and the wearable device disclosed in the embodiments of the present invention, and a specific example is applied in this document to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An output processing method of an audio signal of a wearable device is characterized by comprising the following steps:
acquiring an audio signal to be output of the wearable device;
acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearable device; the frequency of the audio signal to be output is F, the corresponding wavelength is L, the frequency F is divided into K segments, and the wavelength of each segment is LK1, LK2, -LKK, respectively, where K is a positive integer greater than or equal to 1, and the phase-shifting formula of each frequency segment is: M.P ═ S/R; wherein S is a distance, R is a wavelength of a segment, M is an integer part, P is a decimal part, and the phase adjustment parameter corresponding to each bone conduction oscillator comprises the distance S from the bone conduction oscillator to a meeting point and the wavelength R of a corresponding segment;
carrying out phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator;
and outputting the target audio signal to a corresponding bone conduction vibrator, controlling all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through skin and a bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
2. The method according to claim 1, wherein the performing phase adjustment on the audio signal to be output based on the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a target audio signal corresponding to each bone conduction oscillator comprises:
carrying out phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator to obtain a primary audio signal corresponding to each bone conduction oscillator;
and performing digital-to-analog conversion on the primary audio signal corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator.
3. The method according to claim 1 or 2, wherein after the obtaining of the audio signal to be output of the wearable device and before the obtaining of the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device, the method further comprises:
detecting whether the wearable device is in a worn state;
and when the wearable device is in a worn state, executing a step of acquiring a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
4. The method according to claim 3, wherein after the obtaining of the audio signal to be output of the wearable device and before the obtaining of the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device, the method further comprises:
detecting a hand action behavior of the wearable device;
judging whether the hand action behaviors are matched with prestored action behaviors for switching the playing mode of the wearable device to a bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium;
and if so, executing the step of obtaining the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
5. The method of claim 1, wherein the obtaining the audio signal to be output of the wearable device comprises:
monitoring whether the wearable device receives an unread message prompt;
when it is monitored that the wearable device receives an unread message prompt, receiving a reading instruction which is input by a user and aims at the unread message indicated by the unread message prompt;
and converting the unread message indicated by the unread message reminder into voice information in response to the reading instruction so as to obtain an audio signal to be output of the wearable device.
6. A wearable device, comprising:
the acquisition unit is used for acquiring an audio signal to be output of the wearable device;
the phase adjusting unit is used for acquiring a phase adjusting parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device; the frequency of the audio signal to be output is F, the corresponding wavelength is L, the frequency F is divided into K segments, and the wavelength of each segment is LK1, LK2, -LKK, respectively, where K is a positive integer greater than or equal to 1, and the phase-shifting formula of each frequency segment is: M.P ═ S/R; wherein S is a distance, R is a wavelength of a segment, M is an integer part, P is a decimal part, and the phase adjustment parameter corresponding to each bone conduction oscillator comprises the distance S from the bone conduction oscillator to a meeting point and the wavelength R of a corresponding segment;
the phase adjusting unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a target audio signal corresponding to each bone conduction oscillator;
and the control unit is used for outputting the target audio signal to the corresponding bone conduction vibrator, controlling all the bone conduction vibrators of the bone conduction vibrator matrix to simultaneously convert the corresponding target audio signal into a vibration signal and transmit the vibration signal through skin and bone medium, so that the vibration signals of all the bone conduction vibrators of the bone conduction vibrator matrix are superposed at a certain position in the same phase in the process of transmitting through the skin and the bone medium.
7. The wearable device of claim 6, wherein the phase adjustment unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, and a manner of obtaining the target audio signal corresponding to each bone conduction oscillator is specifically:
the phase adjusting unit is further configured to perform phase adjustment on the audio signal to be output according to the phase adjustment parameter corresponding to each bone conduction oscillator, so as to obtain a primary audio signal corresponding to each bone conduction oscillator; and performing digital-to-analog conversion on the primary audio signal corresponding to each bone conduction vibrator to obtain a target audio signal corresponding to each bone conduction vibrator.
8. The wearable device according to claim 6 or 7, further comprising:
the wearing detection unit is used for detecting whether the wearable equipment is in a worn state or not after the acquisition unit acquires the audio signal to be output of the wearable equipment and before the phase adjustment unit acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable equipment;
the phase adjustment unit is further configured to, when the wearing detection unit determines that the wearing device is in a worn state, perform acquisition of a phase adjustment parameter corresponding to each bone conduction vibrator of a bone conduction vibrator matrix of the wearing device.
9. The wearable device of claim 8, further comprising:
the action detection unit is used for detecting a hand action of the wearable device after the acquisition unit acquires the audio signal to be output of the wearable device and before the phase adjustment unit acquires the phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device;
the action judging unit is used for judging whether the hand action behaviors are matched with prestored action behaviors for switching the playing mode of the wearable device to the bone conduction mode; the bone conduction mode is used for converting an audio signal into a vibration signal and transmitting the vibration signal through skin and bone medium;
the phase adjustment unit is further configured to, if the determination result of the action determination unit is yes, perform acquisition of a phase adjustment parameter corresponding to each bone conduction vibrator of the bone conduction vibrator matrix of the wearable device.
10. The wearable device according to claim 6, wherein the acquisition unit includes:
the monitoring unit is used for monitoring whether the wearable device receives an unread message prompt;
the receiving unit is used for receiving a reading instruction which is input by a user and aims at the unread message indicated by the unread message prompt when the monitoring unit monitors that the wearable device receives the unread message prompt;
the conversion unit is used for responding to the reading instruction and converting the unread message indicated by the unread message reminder into voice information so as to obtain an audio signal to be output of the wearable device.
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