CN115813379A - Middle ear acoustic admittance testing method and device and earphone - Google Patents
Middle ear acoustic admittance testing method and device and earphone Download PDFInfo
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Abstract
The embodiment of the application provides a method, a device and an earphone for testing middle ear acoustic admittance, wherein the method is applied to the earphone with an intelligent power amplifier SmartPA chip, and specifically comprises the following steps: responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude; during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude; and during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object. The test result of the middle ear acoustic admittance can be simply, conveniently and quickly obtained.
Description
Technical Field
The application relates to the technical field of computers, in particular to a method and a device for testing middle ear acoustic admittance and an earphone.
Background
In modern society, people are in a noisy environment for a long time, more and more people are in a state of hearing loss, and the hearing loss is an irreversible process. During the use of the loud consumer electronics product, the same loud sound may experience completely different effects for different hearing impaired people.
Generally, a simple evaluation of hearing impairment can be performed by using a tympanogram (also called middle ear admittance chart), but the acquisition of the tympanogram requires professional and precise equipment, and also requires professional medical staff to participate in the test, which is time-consuming.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for testing middle ear acoustic admittance, and an earphone, so as to simply, conveniently and quickly obtain a test result of the middle ear acoustic admittance.
In a first aspect, an embodiment of the present application provides a method for testing middle ear acoustic admittance, where the method includes:
responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude;
during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
and during the period that the amplitude of the blowing signal is gradually reduced by the reference amplitude, determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
Optionally, the method further includes:
determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation;
and fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
Optionally, the method further includes:
detecting whether amplitude leakage exists when the earphone is worn;
detecting whether frequency spectrum leakage exists when the earphone is worn;
and if the amplitude leakage and/or the frequency spectrum leakage exist, generating prompt information until the earphone is worn without the amplitude leakage and the frequency spectrum leakage.
Optionally, the step of determining a first real-time admittance based on the feedback voltage and the feedback current collected by the SmartPA chip and the frequency of the detection signal includes:
processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance;
and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
In a second aspect, an embodiment of the present application provides a method for recommending a music genre, which is applied to a headset with a smart power amplifier SmartPA chip, where the headset is worn by a subject, and the method includes:
responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude;
during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be kept unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
when the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object;
determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation; on the basis of the half-axis admittance diagram, fitting a complete admittance diagram in a curve symmetry mode;
and recommending the music type based on the complete admittance chart.
In a third aspect, an embodiment of the present application provides a device for testing middle ear acoustic admittance, which is applied to an earphone with a smart power amplifier SmartPA chip, where a subject to be tested wears the earphone, and the device includes:
the playing module is used for responding to the test instruction and playing the detection signal and the blowing signal with variable amplitude;
the first determining module is used for determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually increased; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
and the second determining module is used for determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually reduced by the reference amplitude, and determining the difference value of the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
Optionally, the apparatus further comprises:
the generating module is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation;
and the fitting module is used for fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
Optionally, the apparatus further comprises:
the detection module is used for detecting whether amplitude leakage exists when the earphone is worn; detecting whether frequency spectrum leakage exists when the earphone is worn; and if the amplitude leakage and/or the frequency spectrum leakage exist, generating prompt information until the earphone is worn without the amplitude leakage and the frequency spectrum leakage.
Optionally, the first determining module is specifically configured to:
processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance;
and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
In a fourth aspect, an embodiment of the present application provides a music type recommendation device applied to a headset with a smart power amplifier SmartPA chip, where the headset is worn by a subject, and the device includes:
the playing module is used for responding to the test instruction and playing the detection signal and the blowing signal with variable amplitude;
the first determining module is used for determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually increased; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
a second determining module, configured to determine a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal when the amplitude of the insufflation signal is gradually reduced from the reference amplitude, and determine a difference between the second real-time admittance and the reference admittance as a middle ear real-time admittance of the measured object;
the generating module is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation;
a fitting module for fitting a complete admittance chart by adopting a curve symmetry mode on the basis of the half-axis admittance chart
And the recommending module is used for recommending the music type based on the complete admittance graph.
In a fifth aspect, embodiments of the present application provide an earpiece supporting a middle ear acoustic admittance test, comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the electronic device to perform the method of any of the first aspects.
In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium includes a stored program, and when the program runs, a device on which the computer-readable storage medium is located is controlled to execute the method in any one of the first aspects.
In a seventh aspect, the present application provides a computer program product, where the computer program product contains executable instructions, and when the executable instructions are executed on a computer, the computer is caused to execute the method of any one of the first aspect.
By applying the middle ear acoustic admittance testing method, the device and the earphone provided by the embodiment of the application, the detection signal and the blowing signal with variable amplitude are played in response to the testing instruction; during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude; and during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
Therefore, the earphone is adopted to replace professional detection equipment to perform approximate middle ear admittance test. In the testing process, the blowing signal is used for simulating a blowing pump in the traditional acoustic admittance testing equipment, and the pressure bearing of the eardrum of the tested object is changed by changing the amplitude of the blowing signal. When it is detected that the first real-time admittance remains unchanged, a reference amplitude and a reference admittance are determined. And then determining real-time measured admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, wherein the difference value of the real-time measured admittance and the reference admittance is the real-time admittance of the middle ear of the object to be measured. The influence of the difference of the external auditory canal between people on the test can be eliminated, and the whole test process does not need professional medical equipment or professional medical personnel, so that the test is very simple, convenient and efficient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic flow chart of a method for testing middle ear acoustic admittance according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a test authorization interface provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of an insufflation signal applied to an eardrum according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a graph of middle ear admittance;
FIG. 5 (a) is a schematic view of a display interface of a half-axis admittance chart provided by an embodiment of the present application;
FIG. 5 (b) is a schematic diagram of a display interface of a complete admittance chart provided by an embodiment of the present application;
fig. 6 is a flowchart illustrating a method for recommending music types according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a music recommendation page provided in an embodiment of the present application;
fig. 8 is a schematic flowchart of another method for recommending music types according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a middle ear acoustic admittance testing apparatus according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a music genre recommendation apparatus according to an embodiment of the present disclosure.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. For example, the first instruction and the second instruction are for distinguishing different user instructions, and the order of the user instructions is not limited. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.
In order to solve the technical problems that a middle ear admittance curve graph needs to be obtained, professional and precise equipment is needed, professional medical staff needs to participate in testing, and testing consumes much time, an embodiment of the application provides a method, a device and an earphone for testing middle ear admittance, referring to fig. 1, fig. 1 is a schematic flow chart of the method for testing middle ear admittance provided by the embodiment of the application, and the method can include the following steps:
s101: and responding to the test instruction, and playing the detection signal and the blowing signal with variable amplitude.
The testing method shown in fig. 1 can be applied to earphones with a smart power amplifier SmartPA chip, and the earphones need to be worn by a tested object before testing. Since the principle of testing the middle ear acoustic admittance of the left ear and the right ear is the same, in the embodiment of the present application, the left ear and the right ear are not distinguished, that is, the testing method shown in fig. 1 may be used to test the middle ear acoustic admittance of the left ear and the right ear. Furthermore, all admittances mentioned hereinafter refer to acoustic admittances.
As will be understood by those skilled in the art, smartPA function refers to: current/voltage feedback is added to a PA (Power Amplifier) signal output end, the current/voltage of the loudspeaker is detected in real time, the loudspeaker works in a limit state through a related algorithm, and the performance of the loudspeaker is exerted to the maximum extent.
The earphone supporting the SmartPA function is internally provided with a SmartPA chip which can collect feedback voltage and feedback current of the position of the loudspeaker in real time.
In the embodiment of the application, under a specific condition, for example, when a user wears an earphone for a long time to play music, the user can be prompted to have a risk of potential hearing damage, a test of middle ear acoustic admittance is recommended for the user, an attempt is made to obtain authorization of the user, and a subsequent test can be performed after the authorization is obtained.
Referring to fig. 2, fig. 2 is a schematic diagram of a test authorization interface provided in the embodiment of the present application, where if a user clicks "agree", authorization of the user is obtained.
In the testing process, a loudspeaker arranged in the earphone plays detection signals and blowing signals. The detection signal may be a signal with a fixed frequency and a fixed amplitude, the frequency may be set to 226Hz, and in the middle ear acoustic admittance test, the detection signal with the frequency is usually adopted, and the specific reason is as follows: the normal human ear has a phase angle of-75 degrees near the frequency point, and is approximately independent of the auricle sound pressure.
The blowing signal is used for simulating a blowing pump in the traditional acoustic admittance testing equipment and can be an ultralow frequency signal. By changing the amplitude of the blowing signal, the pressure bearing of the eardrum of the tested object can be changed, and the change of the ear canal pressure in the test process can be simulated.
S102: during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip; and when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as the reference admittance, and determining the current amplitude of the blowing signal as the reference amplitude.
In the embodiment of the disclosure, in the initial stage of the test, the amplitude of the air blowing signal can be gradually increased, and the air blowing signal acts on the eardrum of the tested object, so that the eardrum of the tested object is deformed. During the period, a real-time admittance value can be calculated based on the feedback voltage, the feedback current and the frequency of the detection signal collected by the SmartPA chip, and is marked as a first real-time admittance.
With the increase of the blowing signal amplitude, the blowing signal fills the external auditory canal gradually and acts on the eardrum to deform the eardrum, and under the influence of the two aspects, the measured first real-time admittance changes continuously. When the first real-time admittance is kept unchanged, the eardrum representing the measured object does not deform any more.
It is easy to understand that the eardrum of the measured object is not deformed any more, and the eardrum of the measured object is not meant to reach the maximum pressure bearing, i.e. the eardrum of the measured object is not damaged.
In the embodiment of the application, when the first real-time admittance is maintained unchanged, the current first real-time admittance is determined as the reference admittance, and in addition, the current amplitude of the blowing signal is determined as the reference amplitude.
For easy understanding, referring to fig. 3, fig. 3 is a schematic diagram of an air-blowing signal applied to an eardrum according to an embodiment of the present disclosure, as shown in fig. 3, the earphone plays the air-blowing signal, and the air-blowing signal is applied to the eardrum to deform the eardrum, i.e., protrude toward the middle ear, and when it is detected that the admittance value is no longer changed, the eardrum is no longer deformed.
In an embodiment of the disclosure, the step of determining the first real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip may specifically include: processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance; and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
Specifically, as can be understood by those skilled in the art, the feedback voltage and the feedback current collected by the SmartPA chip are both frequency-related signals, and may be processed by using an NLMS (Normalized Least Mean Square adaptive filter) algorithm, so as to obtain a corresponding impedance curve, where the horizontal axis of the impedance curve is frequency and the vertical axis is an impedance value.
Further, reciprocal processing is carried out on the impedance curve to obtain an admittance curve. The horizontal axis of the admittance curve is frequency, the vertical axis is admittance value, and since the admittance curve represents the corresponding relationship between frequency and admittance, the admittance corresponding to the frequency of the detection signal is selected from the admittance curve, i.e. the first real-time admittance, i.e. the admittance corresponding to 226Hz in the admittance curve.
It should be noted that the admittance measured according to the feedback voltage and the feedback current of the horn is the admittance of the horn, but not the middle ear admittance of the object to be measured, but the variation trend and the variation of the admittance of the horn and the middle ear admittance are consistent with the amplitude variation of the blowing signal, and therefore, in the embodiment of the present application, the variation of the admittance of the horn that can be measured can be equivalent to the variation of the middle ear admittance of the object to be measured. See below for details.
S103: and during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
In the embodiment of the application, after the air blowing signal acts on the eardrum to enable the eardrum not to deform any more, the amplitude value of the air blowing signal is gradually reduced. During this time, the real-time admittance is determined based on the feedback voltage, the feedback current and the frequency of the detection signal collected by the SmartPA chip. The specific steps for determining the real-time admittance are the same principles as the steps for determining the reference admittance, as described above.
In the embodiment of the disclosure, after the blowing signal acts on the eardrum to make the eardrum not deform any more, the reference admittance and the reference amplitude of the blowing signal are determined, and then the amplitude of the blowing signal is reduced to perform the test, so that the purpose of doing so includes the following two aspects:
on the one hand, the influence of the difference of the external auditory canals among people on the test can be eliminated. Specifically, after the blowing signal acts on the eardrum to make the eardrum not deform any more, the amplitude of the blowing signal is gradually reduced, and the eardrum deforms in the opposite direction, i.e., in the direction of the external auditory canal. Since the external auditory canal is currently filled with the insufflation signal, the changes in admittance are caused entirely by the deformation of the eardrum, independently of the external auditory canal, during the gradual decrease in the amplitude of the insufflation signal. Therefore, the influence due to the difference in the external auditory meatus between persons can be completely eliminated.
On the other hand, when the blowing signal acts on the eardrum to make the eardrum not deformed any more, the measured reference admittance can be used as an extreme point of the reference. For ease of understanding, the following description is made in conjunction with the middle ear admittance graph.
Referring to fig. 4, fig. 4 is a schematic diagram of a graph of middle ear admittance, as shown in fig. 4, the graph of middle ear admittance is substantially the corresponding relationship between ear canal pressure and middle ear admittance, where the ear canal pressure is maximum at point a and the corresponding middle ear admittance value is 0. Therefore, in the embodiment of the present application, when the blowing signal is applied to the eardrum so that the eardrum is not deformed any more, the middle ear admittance value is 0 corresponding to point a in fig. 4.
As described above, the admittance measured in real time is the admittance of the horn, not the middle ear admittance of the subject to be measured, but the variation trends and variations of the admittance of the horn and the middle ear admittance are consistent. When the blowing signal acts on the eardrum to enable the eardrum not to deform any more, the measured reference admittance is assumed to be a, and the middle ear admittance is 0 at the moment, so that the difference between the admittance of the loudspeaker and the middle ear admittance is a-0= a, and therefore, in the subsequent testing process, a can be subtracted from the real-time measured admittance to obtain the real-time admittance of the middle ear of the tested object.
By applying the middle ear acoustic admittance testing method provided by the embodiment of the application, a detection signal and an air blowing signal with variable amplitude are played in response to a testing instruction; during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude; and during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
Therefore, the earphone is adopted to replace professional detection equipment to perform approximate middle ear admittance test. In the testing process, an air blowing pump in the traditional acoustic admittance testing equipment is simulated by the air blowing signal, and the pressure bearing of the eardrum of the tested object is changed by changing the amplitude of the air blowing signal. When it is detected that the first real-time admittance remains unchanged, a reference amplitude and a reference admittance are determined. And then determining real-time measured admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, wherein the difference value of the real-time measured admittance and the reference admittance is the real-time admittance of the middle ear of the object to be measured. The influence of the difference of the external auditory canal between people on the test can be eliminated, and the whole test process does not need professional medical equipment or professional medical personnel, so that the test is very simple, convenient and efficient.
In one embodiment of the present application, the method further comprises: determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation; and fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
Specifically, because the earphone is not provided with an air pump for sucking air, and the air sucking process cannot be simulated by signals, only the admittance curve of the half shaft can be obtained by adopting the scheme of the application. Generally, admittance curves are approximately symmetrical, so in the embodiment of the present application, curve symmetry can be performed on the basis of the half-axis admittance diagram to obtain a complete admittance diagram.
As an example, referring to fig. 5 (a) and 5 (b), fig. 5 (a) is a schematic diagram of a display interface of a half-axis admittance chart provided by an embodiment of the present application, and fig. 5 (b) is a schematic diagram of a display interface of a full admittance chart provided by an embodiment of the present application. Therefore, the half-axis admittance graph can be obtained through testing, and on the basis of the half-axis admittance graph, the half-axis admittance graph is symmetrical by taking the longitudinal axis as a symmetry axis, so that a complete admittance graph can be obtained.
In one embodiment of the present application, before performing admittance detection, whether amplitude leakage and spectrum leakage exist when the earphone is worn may be detected.
Specifically, the step of detecting whether the amplitude leakage exists when the earphone is worn may include: the method comprises the steps of collecting microphone signals in the earphone, calculating the amplitude of the microphone signals, judging whether the calculated amplitude is larger than a preset amplitude value or not, and if yes, determining that amplitude leakage does not exist when the earphone is worn, wherein the preset amplitude value is calculated according to loudspeaker input signals of the earphone, for example, the amplitude value calculated according to the loudspeaker input signals of the earphone is multiplied by a preset coefficient to obtain the preset amplitude value.
As an example, the user is prompted to wear headphones and then collect FB (Single feedback) MIC (Microphone) signals in the headphones for the left and right ears, respectively
，
The acquisition time may be 3 seconds. The magnitude of the amplitudes of the two FB MIC signals is then calculated as follows.
Wherein the content of the first and second substances,
a pre-set amplitude value is represented,
representing amplitude operation, specifically:
wherein the content of the first and second substances,
which represents the number of sampling points of the signal,
is shown as
Signal amplitude values of the sampling points.
That is to say, for the earphone of left and right ears, if the signal of gathering compares with the speaker signal, the range is great, can think that the earphone is worn and not have amplitude to leak, can satisfy the test demand.
Further, the step of detecting whether the frequency spectrum leakage exists when the earphone is worn can comprise: collecting microphone signals in an earphone, and converting the microphone signals into frequency domain microphone signals; and performing spectrum weighting operation based on the frequency domain microphone signal and the frequency domain loudspeaker signal, and determining that the frequency spectrum leakage does not exist when the earphone is worn if the operation result is greater than a preset threshold value. The frequency domain loudspeaker signal is obtained by carrying out frequency domain conversion on a loudspeaker input signal of the earphone.
As an example, a user is prompted to wear earphones and then FB MIC signals in the earphones of the left ear and the right ear are collected respectively
，
Then, the following formula is adopted for judgment:
wherein, the first and the second end of the pipe are connected with each other,
representing the frequency domain conversion of the signal and the spectral energy operation,
representing the loudspeaker input signal of the left earphone,
representing the loudspeaker input signal of the right earphone,
representing a preset scale threshold.
If the formula is met, the earphone can be considered to be worn without spectrum leakage, and the test requirement can be met.
If amplitude leakage and/or spectrum leakage exist, prompting the user to wear the earphone again until the amplitude leakage and/or spectrum leakage does not exist, and performing subsequent tests.
Referring to fig. 6, fig. 6 is a schematic flowchart of a method for recommending music genre according to an embodiment of the present application, and as shown in fig. 6, the method includes the following steps:
s601: responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude;
s602: during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
s603: determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the object to be measured;
s604: determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation;
s605: on the basis of the half-axis admittance diagram, fitting a complete admittance diagram in a curve symmetry mode;
s606: and recommending the music type based on the complete admittance chart.
Specifically, after obtaining the complete admittance chart, a Jerger classification method can be adopted to obtain an approximate evaluation of the current hearing state, and then a proper music type is determined according to the evaluation result and recommended to the user.
As an example, when the evaluation result indicates that the eardrum is in a softer state or has slight perforation, the sound pressure is particularly easy to transmit to the middle ear and the following hearing tissues, and the method is not suitable for listening to music such as hard rock and roll with higher sound pressure level and concentrated energy for a long time, so that the user can recommend soothing music.
As an example, when the evaluation indicates that there is some effusion in the middle ear, the user may be recommended to have a break, or to recommend more gentle music.
Referring to fig. 7, fig. 7 is a schematic diagram of a music recommendation page provided in the embodiment of the present application.
For ease of understanding, the following description is further made in conjunction with fig. 8 of the accompanying drawings. Fig. 8 is a schematic flowchart of another method for recommending a music genre according to an embodiment of the present disclosure. As shown in fig. 8, the method comprises the following steps:
s801: wear detection;
s802: middle ear admittance testing;
the method specifically comprises the following steps: s802a: testing a sound pressure boundary; s802b: middle ear admittance prediction; s802c: and (5) testing half-shaft admittance.
The sound pressure boundary test is to gradually increase the amplitude of the blowing signal until the eardrum of the tested object is not deformed any more, and then to measure the reference admittance and the reference amplitude. The middle ear admittance prediction means that the reference admittance is used as the difference value of the horn admittance and the middle ear admittance, and then the middle ear admittance is predicted in the subsequent test process. The half-axis admittance test is that during the period of gradually reducing the amplitude of the blowing signal, the reference admittance is subtracted from the admittance measured in real time to obtain the middle ear admittance.
S803: the middle ear admittance plots were fitted.
S804: jerger classification.
S805: and recommending a listening scheme.
The specific implementation of S801-S805 has been described in detail above, and is not described again.
Therefore, in the embodiment of the application, a proper music type or suggestion can be recommended for the user according to the admittance diagram obtained through the test, so that the user experience can be improved, and the user stickiness can be enhanced.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a middle ear acoustic admittance testing apparatus provided in an embodiment of the present application, as shown in fig. 9, including:
a playing module 901, configured to play the detection signal and the blowing signal with variable amplitude in response to the test instruction;
a first determining module 902, configured to determine a first real-time admittance based on a feedback voltage, a feedback current, and a frequency of a detection signal acquired by a SmartPA chip during a period in which an amplitude of an insufflation signal gradually increases; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
a second determining module 903, configured to determine a first real-time admittance based on the feedback voltage, the feedback current, and the frequency of the detection signal acquired by the SmartPA chip during a period in which the amplitude of the blowing signal is gradually increased; and when the first real-time admittance is detected to be kept unchanged, determining the current first real-time admittance as the reference admittance, and determining the current amplitude of the blowing signal as the reference amplitude.
The middle ear acoustic admittance testing device provided by the embodiment of the application responds to a testing instruction, and plays a detection signal and an air blowing signal with variable amplitude; during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude; and during the period that the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the object to be measured.
Therefore, the earphone is adopted to replace professional detection equipment to perform approximate middle ear admittance test. In the testing process, the blowing signal is used for simulating a blowing pump in the traditional acoustic admittance testing equipment, and the pressure bearing of the eardrum of the tested object is changed by changing the amplitude of the blowing signal. When it is detected that the first real-time admittance remains unchanged, a reference amplitude and a reference admittance are determined. And then determining real-time measured admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, wherein the difference value of the real-time measured admittance and the reference admittance is the real-time admittance of the middle ear of the object to be measured. The influence of the difference of the external auditory canal between people on the test can be eliminated, and the whole test process does not need professional medical equipment or professional medical personnel, so that the test is very simple, convenient and efficient.
In an embodiment of the present application, on the basis of the apparatus shown in fig. 9, the apparatus may further include:
the generating module is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation;
and the fitting module is used for fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
In an embodiment of the present application, on the basis of the apparatus shown in fig. 9, the apparatus may further include:
the detection module is used for detecting whether amplitude leakage exists when the earphone is worn; detecting whether frequency spectrum leakage exists when the earphone is worn; and if the amplitude leakage and/or the frequency spectrum leakage exist, generating prompt information until the earphone is worn without the amplitude leakage and the frequency spectrum leakage.
In an embodiment of the present application, the first determining module 902 may be specifically configured to:
processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance;
and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a music genre recommendation apparatus provided in an embodiment of the present application, and as shown in fig. 10, the music genre recommendation apparatus includes:
the playing module 1001 is used for responding to the test instruction and playing the detection signal and the blowing signal with variable amplitude;
the first determining module 1002 is configured to determine a first real-time admittance based on a feedback voltage, a feedback current and a frequency of a detection signal acquired by a SmartPA chip during a period in which an amplitude of an air blowing signal is gradually increased; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
the second determining module 1003 is configured to determine a second real-time admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip when the amplitude of the blowing signal is gradually reduced from the reference amplitude, and determine a difference between the second real-time admittance and the reference admittance as the real-time admittance of the middle ear of the object to be measured;
the generating module 1004 is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation;
a fitting module 1005, configured to fit a complete admittance diagram in a curve symmetry manner on the basis of the half-axis admittance diagram;
and a recommending module 1006, configured to recommend the music type based on the complete admittance map.
Therefore, the earphone is adopted to replace professional detection equipment to perform approximate middle ear admittance test. In the testing process, an air blowing pump in the traditional acoustic admittance testing equipment is simulated by the air blowing signal, and the pressure bearing of the eardrum of the tested object is changed by changing the amplitude of the air blowing signal. When it is detected that the first real-time admittance remains unchanged, a reference amplitude and a reference admittance are determined. And then determining real-time measured admittance based on the feedback voltage, the feedback current and the frequency of the detection signal acquired by the SmartPA chip, wherein the difference value of the real-time measured admittance and the reference admittance is the real-time admittance of the middle ear of the object to be measured. Can eliminate the influence of the difference of the external auditory canal between people on the test, does not need professional medical equipment or professional medical staff in the whole test process, and is very simple, convenient and efficient
In addition, a proper music type or suggestion can be recommended for the user according to the admittance diagram obtained through the test, so that the user experience can be improved, and the user stickiness can be enhanced.
In a specific implementation, the present application further provides an earphone supporting middle ear acoustic admittance testing, comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the earphone to perform some or all of the steps of the above method embodiments.
In a specific implementation manner, the present application further provides a computer storage medium, where the computer storage medium may store a program, and when the program runs, the computer storage medium controls a device in which the computer readable storage medium is located to perform some or all of the steps in the foregoing embodiments. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
In a specific implementation, an embodiment of the present application further provides a computer program product, where the computer program product includes executable instructions, and when the executable instructions are executed on a computer, the computer is caused to perform some or all of the steps in the foregoing method embodiments.
Embodiments of the mechanisms disclosed herein may be implemented in hardware, software, firmware, or a combination of these implementations. Embodiments of the application may be implemented as computer programs or program code executing on programmable systems comprising at least one processor, a storage system (including volatile and non-volatile memory and/or storage elements), at least one input device, and at least one output device.
Program code may be applied to input instructions to perform the functions described herein and generate output information. The output information may be applied to one or more output devices in a known manner. For purposes of this Application, a processing system includes any system having a Processor such as, for example, a Digital Signal Processor (DSP), a microcontroller, an Application Specific Integrated Circuit (ASIC), or a microprocessor.
The program code may be implemented in a high level procedural or object oriented programming language to communicate with a processing system. The program code can also be implemented in assembly or machine language, if desired. Indeed, the mechanisms described in this application are not limited in scope to any particular programming language. In any case, the language may be a compiled or interpreted language.
In some cases, the disclosed embodiments may be implemented in hardware, firmware, software, or any combination thereof. The disclosed embodiments may also be implemented as instructions carried by or stored on one or more transitory or non-transitory machine-readable (e.g., computer-readable) storage media, which may be read and executed by one or more processors. For example, the instructions may be distributed via a network or via other computer readable media. Thus, a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer), including, but not limited to, floppy diskettes, optical disks, compact disk Read Only memories (CD-ROMs), magneto-optical disks, read Only Memories (ROMs), random Access Memories (RAMs), erasable Programmable Read Only Memories (EPROMs), electrically Erasable Programmable Read Only Memories (EEPROMs), magnetic or optical cards, flash Memory, or a tangible machine-readable Memory for transmitting information (e.g., carrier waves, infrared signals, digital signals, etc.) using the Internet in electrical, optical, acoustical or other forms of propagated signals. Thus, a machine-readable medium includes any type of machine-readable medium suitable for storing or transmitting electronic instructions or information in a form readable by a machine (e.g., a computer).
In the drawings, some features of structures or methods may be shown in a particular arrangement and/or order. However, it is to be understood that such specific arrangement and/or ordering may not be required. Rather, in some embodiments, the features may be arranged in a manner and/or order different from that shown in the figures. In addition, the inclusion of a structural or methodical feature in a particular figure is not meant to imply that such feature is required in all embodiments, and in some embodiments, may not be included or may be combined with other features.
It should be noted that, in the embodiments of the apparatuses in the present application, each unit/module is a logical unit/module, and physically, one logical unit/module may be one physical unit/module, or may be a part of one physical unit/module, and may also be implemented by a combination of multiple physical units/modules, where the physical implementation manner of the logical unit/module itself is not the most important, and the combination of the functions implemented by the logical unit/module is the key to solve the technical problem provided by the present application. Furthermore, in order to highlight the innovative part of the present application, the above-mentioned device embodiments of the present application do not introduce units/modules which are not so closely related to solve the technical problems presented in the present application, which does not indicate that no other units/modules exist in the above-mentioned device embodiments.
It is noted that, in the examples and descriptions of this patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 defined by the phrase "comprising" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While the present application has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application.
Claims (13)
1. A middle ear acoustic admittance testing method is applied to earphones with a smart power amplifier SmartPA chip, wherein a tested object wears the earphones, and the method comprises the following steps:
responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude;
during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
and during the period that the amplitude of the blowing signal is gradually reduced by the reference amplitude, determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
2. The method of claim 1, further comprising:
determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation;
and fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
3. The method of claim 1, wherein prior to responding to a test instruction, the method further comprises:
detecting whether amplitude leakage exists when the earphone is worn;
detecting whether frequency spectrum leakage exists when the earphone is worn;
and if the amplitude leakage and/or the frequency spectrum leakage exist, generating prompt information until the earphone is worn without the amplitude leakage and the frequency spectrum leakage.
4. The method of claim 1, wherein said step of determining a first real-time admittance based on the feedback voltage, the feedback current, and the frequency of the probing signal collected by the SmartPA chip comprises:
processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance;
and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
5. A music type recommendation method is applied to earphones with a smart power amplifier (SmartPA) chip, wherein the earphones are worn by a tested object, and the method comprises the following steps:
responding to a test instruction, and playing a detection signal and a blowing signal with variable amplitude;
during the period that the amplitude of the blowing signal is gradually increased, determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
when the amplitude of the blowing signal is gradually reduced from the reference amplitude, determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal, and determining the difference value between the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object;
determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear, and generating a half-axis admittance diagram of the middle ear of the measured object based on the corresponding relation; on the basis of the half-axis admittance diagram, fitting a complete admittance diagram in a curve symmetry mode;
and recommending the music type based on the complete admittance chart.
6. The utility model provides a testing arrangement of middle ear acoustic admittance which characterized in that is applied to the earphone that has intelligent power amplifier SmartPA chip, and wherein, the measurand wears the earphone includes:
the playing module is used for responding to the test instruction and playing the detection signal and the blowing signal with variable amplitude;
the first determining module is used for determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually increased; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
and the second determining module is used for determining a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually reduced by the reference amplitude, and determining the difference value of the second real-time admittance and the reference admittance as the middle ear real-time admittance of the measured object.
7. The apparatus of claim 6, further comprising:
the generating module is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation;
and the fitting module is used for fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram.
8. The apparatus of claim 6, further comprising:
the detection module is used for detecting whether amplitude leakage exists when the earphone is worn; detecting whether frequency spectrum leakage exists when the earphone is worn; and if the amplitude leakage and/or the frequency spectrum leakage exist, generating prompt information until the earphone is worn without the amplitude leakage and the frequency spectrum leakage.
9. The apparatus of claim 6, wherein the first determining module is specifically configured to:
processing the feedback voltage and the feedback current by adopting a filter algorithm to obtain an impedance curve, and performing reciprocal processing on the impedance curve to obtain an admittance curve; the admittance curve represents the corresponding relation between the frequency and the admittance;
and determining the admittance corresponding to the frequency of the detection signal as the first real-time admittance based on the admittance curve.
10. A music type recommendation device applied to a headset with a smart power amplifier SmartPA chip, wherein the headset is worn by a subject, the device comprising:
the playing module is used for responding to the test instruction and playing the detection signal and the blowing signal with variable amplitude;
the first determining module is used for determining a first real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal during the period that the amplitude of the blowing signal is gradually increased; when the first real-time admittance is detected to be unchanged, determining the current first real-time admittance as a reference admittance, and determining the current amplitude of the blowing signal as a reference amplitude;
a second determining module, configured to determine a second real-time admittance based on the feedback voltage and the feedback current acquired by the SmartPA chip and the frequency of the detection signal when the amplitude of the insufflation signal is gradually reduced from the reference amplitude, and determine a difference between the second real-time admittance and the reference admittance as a middle ear real-time admittance of the measured object;
the generating module is used for determining the corresponding relation between the amplitude of the blowing signal and the real-time admittance of the middle ear and generating a half-axis admittance chart of the middle ear of the measured object based on the corresponding relation;
the fitting module is used for fitting a complete admittance diagram by adopting a curve symmetry mode on the basis of the half-axis admittance diagram;
and the recommending module is used for recommending the music type based on the complete admittance chart.
11. An earpiece supporting a middle ear acoustic admittance test, comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the earpiece to perform the method of any of claims 1-5.
12. A computer-readable storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer-readable storage medium resides to perform the method of any one of claims 1-5.
13. A computer program product containing executable instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 5.
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