Human ear bone conduction transfer function measurement method, device, terminal equipment and medium

Abstract

The present invention discloses a method, device, terminal device and medium for measuring the bone conduction transfer function of a human ear, which includes obtaining a frequency to be tested; playing a first audio signal through a bone conduction earphone, and adjusting the frequency of the first audio signal to the frequency to be tested; playing a second audio signal through an in-ear earphone, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; adjusting the phase and amplitude of the second audio signal respectively, and determining a second frequency domain signal of the in-ear earphone corresponding to the frequency to be tested; measuring the transfer function of the in-ear earphone, and calculating the bone conduction transfer function corresponding to the frequency to be tested based on the transfer function of the in-ear earphone and the second frequency domain signal. The bone conduction transfer function of the bone conduction earphone is indirectly calculated based on the second frequency domain signal and the transfer function of the in-ear earphone at the frequency to be tested, thereby improving the accuracy of the measurement result of the bone conduction transfer function of the human ear.

Description

Technical Field

[0001] The present invention relates to the technical field of auditory equipment, and in particular to a method, device, terminal equipment and medium for measuring the bone conduction transfer function of a human ear. Background Art

[0002] With the development of technology, bone conduction hearing devices are gradually applied to consumer markets, medical hearing aids, military equipment and other fields. The measurement and calculation technology of the bone conduction transfer function of sound is the key technology for making bone conduction headphones and bone conduction hearing aids.

[0003] In the related art, the bone conduction transfer function is mainly determined indirectly through the air conduction transfer function of air conduction headphones or speakers. However, when using speakers as the sound source to test the bone conduction transfer function, the vibration of the sound waves emitted by the speakers will affect the vibration of the bone conduction headphones themselves to a certain extent, especially in the low-frequency band, resulting in large test errors.

[0004] Therefore, it is necessary to propose a solution to improve the accuracy of human ear bone conduction transfer function measurement results. Summary of the invention

[0005] The main purpose of the present invention is to provide a method, device, terminal equipment and medium for measuring the bone conduction transfer function of the human ear, aiming to improve the accuracy of the measurement results of the bone conduction transfer function of the human ear.

[0006] To achieve the above object, the present invention provides a method for measuring a human ear bone conduction transfer function, the method comprising:

[0007] Get the frequency point to be tested;

[0008] Playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested;

[0009] Playing a second audio signal through the in-ear headset, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal;

[0010] The phase and amplitude of the second audio signal are adjusted respectively to determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested;

[0011] The transfer function of the in-ear earphone is measured, and the bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear earphone and the second frequency domain signal.

[0012] Optionally, the step of obtaining a frequency point to be tested includes:

[0013] Determining a frequency distribution range and an emphasis range of the first audio signal;

[0014] Selecting a basic frequency point from the distribution range according to a logarithmic characteristic;

[0015] Selecting additional frequency points from the focus range;

[0016] The basic frequency point and the added frequency point are used as the frequency points of the bone conduction earphone, wherein the frequency points include the frequency point to be tested.

[0017] Optionally, after the step of playing the first audio signal through the bone conduction earphone and adjusting the frequency of the first audio signal to the frequency to be tested, the step further includes:

[0018] adjusting a phase of the first audio signal to a first phase;

[0019] Adjusting the amplitude of the first audio signal to a first amplitude, wherein the first audio signal corresponding to the first amplitude reaches a first volume threshold;

[0020] The first phase and the first amplitude are recorded as a first frequency domain signal of the bone conduction headset corresponding to the frequency point to be tested.

[0021] Optionally, the step of adjusting the phase and amplitude of the second audio signal respectively to determine the second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested includes:

[0022] Adjusting the phase of the second audio signal to a second phase, wherein the second audio signal corresponding to the second phase reaches a second volume threshold;

[0023] adjusting the amplitude of the second audio signal to a second amplitude, wherein the second audio signal corresponding to the second amplitude reaches a third volume threshold;

[0024] The second phase and the second amplitude are recorded as a second frequency domain signal of the in-ear headphone corresponding to the frequency point to be tested.

[0025] Optionally, the step of measuring the transfer function of the in-ear earphone and calculating the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal includes:

[0026] Measuring the transfer function of the in-ear headphone by electroacoustic measurement;

[0027] The bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear headphone, the first frequency domain signal and the second frequency domain signal.

[0028] Optionally, after the step of measuring the transfer function of the in-ear earphone and calculating the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal, the step further includes:

[0029] Traverse each frequency point of the bone conduction earphone, calculate the bone conduction transfer function corresponding to each frequency point, and obtain the preliminary bone conduction transfer function of the bone conduction earphone.

[0030] Optionally, after the step of traversing each of the frequency points, calculating the bone conduction transfer function corresponding to each of the frequency points, and obtaining a preliminary bone conduction transfer function of the bone conduction earphone, the step further includes:

[0031] Measuring preliminary bone conduction transfer functions obtained by several users wearing the bone conduction headphones;

[0032] The precise bone conduction transfer function of the bone conduction earphone is obtained according to the preliminary bone conduction transfer function corresponding to each of the users.

[0033] In addition, to achieve the above-mentioned purpose, the present invention also provides a human ear bone conduction transfer function measurement device, the human ear bone conduction transfer function measurement device comprising:

[0034] An acquisition module is used to acquire the frequency point to be tested;

[0035] A first playing module, used for playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested;

[0036] A second playing module, configured to play a second audio signal through an in-ear headphone, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal;

[0037] An adjustment module, configured to adjust the phase and amplitude of the second audio signal respectively, and determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested;

[0038] A calculation module is used to measure the transfer function of the in-ear earphone and calculate the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal.

[0039] In addition, to achieve the above-mentioned purpose, the present invention also provides a terminal device, which includes a memory, a processor, and a human ear bone conduction transfer function measurement program stored in the memory and executable on the processor, and the human ear bone conduction transfer function measurement program, when executed by the processor, implements the steps of the human ear bone conduction transfer function measurement method described above.

[0040] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which a human ear bone conduction transfer function measurement program is stored. When the human ear bone conduction transfer function measurement program is executed by a processor, the steps of the human ear bone conduction transfer function measurement method as described above are implemented.

[0041] The embodiments of the present invention propose a method, device, terminal device and medium for measuring the bone conduction transfer function of the human ear, which obtains the frequency to be tested; plays a first audio signal through a bone conduction headset, and adjusts the frequency of the first audio signal to the frequency to be tested; plays a second audio signal through an in-ear headset, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; adjusts the phase and amplitude of the second audio signal respectively, and determines the second frequency domain signal of the in-ear headset corresponding to the frequency to be tested; measures the transfer function of the in-ear headset, and calculates the bone conduction transfer function corresponding to the frequency to be tested based on the transfer function of the in-ear headset and the second frequency domain signal. The bone conduction transfer function of the bone conduction headset is indirectly calculated based on the second frequency domain signal and transfer function of the in-ear headset at the frequency to be tested, thereby improving the accuracy of the measurement result of the bone conduction transfer function of the human ear, and there is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a functional module schematic diagram of a terminal device to which the human ear bone conduction transfer function measuring device of the present invention belongs;

[0043] Figure 2 It is a flow chart of an exemplary embodiment of a method for measuring human ear bone conduction transfer function of the present invention;

[0044] Figure 3 for Figure 2 A schematic diagram of a specific process of step S50 in the embodiment.

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0047] The main solution of the embodiment of the present invention is: by obtaining the frequency to be tested; playing the first audio signal through the bone conduction earphone, and adjusting the frequency of the first audio signal to the frequency to be tested; playing the second audio signal through the in-ear earphone, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; adjusting the phase and amplitude of the second audio signal respectively, and determining the second frequency domain signal of the in-ear earphone corresponding to the frequency to be tested; measuring the transfer function of the in-ear earphone, and calculating the bone conduction transfer function corresponding to the frequency to be tested based on the transfer function of the in-ear earphone and the second frequency domain signal. The bone conduction transfer function of the bone conduction earphone is indirectly calculated based on the second frequency domain signal and transfer function of the in-ear earphone at the frequency to be tested, thereby improving the accuracy of the measurement results of the bone conduction transfer function of the human ear, and there is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate.

[0048] The bone conduction transfer function is also called the bone conduction transfer function. The measurement and calculation technology of the bone conduction transfer function of sound is the key technology for making good bone conduction headphones and bone conduction hearing aids. Low-end bone conduction headphones and bone conduction hearing aids often do not consider the bone conduction transfer function of sound, so it is difficult to achieve good results.

[0049] The air conduction transfer function of sound can be directly measured through the air sound propagation path using a simulated ear microphone, but the bone conduction transfer function is difficult to measure directly. Since the bone pathways around the human ear are complex and difficult to simulate, even if a bone conduction test sensor (vibration sensor, accelerometer) is added to the test instrument, it can only pick up the vibration signal of the bone conduction earphones and bone conduction hearing aids, and cannot perform the transfer function test function.

[0050] The bone conduction transfer function can be obtained by indirect measurement. When measuring bone conduction headphones, the bone conduction transfer function can be indirectly calculated by measuring the air conduction transfer function of the air conduction headphones or speakers that sound at the same time. However, when using speakers as sound sources to test the bone conduction transfer function, the vibration of the sound waves emitted by the speakers will affect the vibration of the bone conduction headphones themselves to a certain extent, especially in the low-frequency band. The vibration of the low-frequency sound emitted by the speakers will be transmitted to the bone conduction pathway through the skin and bones to form crosstalk, resulting in large test errors.

[0051] Most of the existing methods for measuring and calculating bone conduction transfer function require collecting ear sound signals or collecting signals in the ear canal. This collection method uses complex collection equipment and harsh conditions, is highly invasive to the subject, and involves complex signal processing, which is costly and inconvenient to operate.

[0052] The present invention provides a solution to measure the bone conduction hearing aid transfer function through a convenient and efficient method, thereby reducing the use of instruments and equipment and improving the accuracy of the measurement results of the human ear bone conduction transfer function.

[0053] Specifically, refer to Figure 1 , Figure 1 The figure is a functional module diagram of the terminal device to which the human ear bone conduction transfer function measuring device of the present invention belongs. The human ear bone conduction transfer function measuring device can be a device that is independent of the terminal device and can measure the human ear bone conduction transfer function, and it can be carried on the terminal device in the form of hardware or software. The terminal device can be a smart mobile terminal with data processing function such as a mobile phone or a tablet computer, or a fixed terminal device or server with data processing function.

[0054] In this embodiment, the terminal device to which the human ear bone conduction transfer function measuring apparatus belongs includes at least an output module 110 , a processor 120 , a memory 130 and a communication module 140 .

[0055] The memory 130 stores an operating system and a human ear bone conduction transfer function measurement program. The human ear bone conduction transfer function measurement device can store the acquired frequency to be tested, the second frequency domain signal corresponding to the in-ear earphone at the frequency to be tested, the measured transfer function of the in-ear earphone, and the bone conduction transfer function corresponding to the frequency to be tested calculated according to the transfer function of the in-ear earphone and the second frequency domain signal in the memory 130; the output module 110 can be a display screen, etc. The communication module 140 can include a WIFI module, a mobile communication module, a Bluetooth module, etc., and communicates with an external device or server through the communication module 140.

[0056] When the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are implemented:

[0057] Get the frequency point to be tested;

[0058] Playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested;

[0059] Playing a second audio signal through the in-ear headset, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal;

[0060] The phase and amplitude of the second audio signal are adjusted respectively to determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested;

[0061] The transfer function of the in-ear earphone is measured, and the bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear earphone and the second frequency domain signal.

[0062] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0063] Determining a frequency distribution range and an emphasis range of the first audio signal;

[0064] Selecting a basic frequency point from the distribution range according to a logarithmic characteristic;

[0065] Selecting additional frequency points from the focus range;

[0066] The basic frequency point and the added frequency point are used as the frequency points of the bone conduction earphone, wherein the frequency points include the frequency point to be tested.

[0067] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0068] adjusting a phase of the first audio signal to a first phase;

[0069] Adjusting the amplitude of the first audio signal to a first amplitude, wherein the first audio signal corresponding to the first amplitude reaches a first volume threshold;

[0070] The first phase and the first amplitude are recorded as a first frequency domain signal of the bone conduction headset corresponding to the frequency point to be tested.

[0071] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0072] Adjusting the phase of the second audio signal to a second phase, wherein the second audio signal corresponding to the second phase reaches a second volume threshold;

[0073] adjusting the amplitude of the second audio signal to a second amplitude, wherein the second audio signal corresponding to the second amplitude reaches a third volume threshold;

[0074] The second phase and the second amplitude are recorded as a second frequency domain signal of the in-ear headphone corresponding to the frequency point to be tested.

[0075] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0076] Measuring the transfer function of the in-ear headphone by electroacoustic measurement;

[0077] The bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear headphone, the first frequency domain signal and the second frequency domain signal.

[0078] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0079] Traverse each frequency point of the bone conduction earphone, calculate the bone conduction transfer function corresponding to each frequency point, and obtain the preliminary bone conduction transfer function of the bone conduction earphone.

[0080] Furthermore, when the human ear bone conduction transfer function measurement program in the memory 130 is executed by the processor, the following steps are also implemented:

[0081] Measuring preliminary bone conduction transfer functions obtained by several users wearing the bone conduction headphones;

[0082] The precise bone conduction transfer function of the bone conduction earphone is obtained according to the preliminary bone conduction transfer function corresponding to each of the users.

[0083] This embodiment adopts the above scheme, specifically by obtaining the frequency to be tested; playing the first audio signal through the bone conduction earphone, and adjusting the frequency of the first audio signal to the frequency to be tested; playing the second audio signal through the in-ear earphone, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; adjusting the phase and amplitude of the second audio signal respectively, and determining the second frequency domain signal of the in-ear earphone corresponding to the frequency to be tested; measuring the transfer function of the in-ear earphone, and calculating the bone conduction transfer function corresponding to the frequency to be tested based on the transfer function of the in-ear earphone and the second frequency domain signal. The bone conduction transfer function of the bone conduction earphone is indirectly calculated based on the second frequency domain signal and transfer function of the in-ear earphone at the frequency to be tested, thereby improving the accuracy of the measurement results of the bone conduction transfer function of the human ear, and there is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate.

[0084] Based on the above terminal device architecture but not limited to the above architecture, an embodiment of the method of the present invention is proposed.

[0085] The execution subject of the method of this embodiment may be a human ear bone conduction transfer function measurement device or terminal equipment, etc. This embodiment takes a human ear bone conduction transfer function measurement device as an example.

[0086] Reference Figure 2 , Figure 2 The figure is a flow chart of an exemplary embodiment of a method for measuring a human ear bone conduction transfer function according to the present invention. The method for measuring a human ear bone conduction transfer function comprises:

[0087] Step S10, obtaining the frequency point to be tested;

[0088] Determining a frequency distribution range and an emphasis range of the first audio signal;

[0089] Selecting a basic frequency point from the distribution range according to a logarithmic characteristic;

[0090] Selecting additional frequency points from the focus range;

[0091] The basic frequency point and the added frequency point are used as the frequency points of the bone conduction earphone, wherein the frequency points include the frequency point to be tested.

[0092] Specifically, in an embodiment of the present invention, a person with normal hearing is selected as a measurer, and the measurer correctly wears a bone conduction headset or a bone conduction hearing aid or other hearing device that requires measurement of the bone conduction transfer function on one ear, and the bone conduction hearing device plays a first audio signal. Since the frequency distribution range of the audio signal that can be perceived by the human ear is 20Hz-20kHz, and the perception of sound conforms to the logarithmic characteristic, points are taken from 20Hz-20kHz according to the logarithmic characteristic, and the frequency points are appropriately increased within the focus range. For example, the hearing aid test range is 200Hz-8kHz. As one of the implementation methods, the focus is on increasing the frequency points within the range of 200Hz-8kHz.

[0093] Step S20, playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested;

[0094] After obtaining the frequency to be tested, the first audio signal S1(n) can be played through the bone conduction headset. The S1(n) signal is a frequency domain discrete signal with a finite length, and the length is L, n = 1,2,3…,L. S1(n) is a frequency domain signal, including frequency, phase and magnitude information. For example, the frequency of S1(1) is 20 Hz, the phase is 0 deg, and the amplitude is -15 dBFS. The frequency of the first audio signal is adjusted to the frequency to be tested. After this step, the following steps are also included:

[0095] adjusting a phase of the first audio signal to a first phase;

[0096] Adjusting the amplitude of the first audio signal to a first amplitude, wherein the first audio signal corresponding to the first amplitude reaches a first volume threshold;

[0097] The first phase and the first amplitude are recorded as a first frequency domain signal of the bone conduction headset corresponding to the frequency point to be tested.

[0098] Specifically, the phase and amplitude of the first audio signal S1(n) are fixed. In the embodiment of the present invention, the phase is uniformly fixed to 0 deg, and the amplitude of the signal is guaranteed to be audible to normal human ears after being transmitted from the bone conduction earphone (hearing aid). The selection range is generally -10 dBFS to -20 dBFS.

[0099] Step S30, playing a second audio signal through the in-ear headset, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal;

[0100] Furthermore, the second audio signal can be played through an in-ear earphone. Prior to this, the in-ear earphone needs to be worn on the single ear where the bone conduction earphone is located.

[0101] Specifically, wear an in-ear earphone on the side of the bone conduction earphone. During this process, try to ensure that the in-ear earphone and the bone conduction earphone do not touch each other as much as possible. At the same time, you can use a soft and sealed silicone cover or sponge cover to reduce the vibration of the external auditory canal bone system. The in-ear earphone can be worn in the form of an air conduction hearing aid and connected through a catheter. If contact with the current bone conduction earphone cannot be avoided, use silicone that is as soft and lightweight as possible to separate the two and try to avoid mutual influence between the two.

[0102] The second audio signal is played through the in-ear headphones, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal, and the amplitude and phase of the second audio signal can be adjusted.

[0103] Step S40, adjusting the phase and amplitude of the second audio signal respectively, and determining a second frequency domain signal of the in-ear headphone corresponding to the frequency point to be tested;

[0104] Adjusting the phase of the second audio signal to a second phase, wherein the second audio signal corresponding to the second phase reaches a second volume threshold;

[0105] adjusting the amplitude of the second audio signal to a second amplitude, wherein the second audio signal corresponding to the second amplitude reaches a third volume threshold;

[0106] The second phase and the second amplitude are recorded as a second frequency domain signal of the in-ear headphone corresponding to the frequency point to be tested.

[0107] After adjusting the frequency of the second audio signal to the frequency to be tested, first keep the bone conduction earphone playing the first audio signal without interruption, then use the in-ear earphone to play the second audio signal, and adjust the phase of the second audio signal so that the sound heard by the measurer is minimized, and then fix the current phase, and then continue to adjust the amplitude of the second audio signal so that the measurer cannot hear the sound or the sound heard is minimized, and then record the amplitude and phase of the second audio signal at this time as the second frequency domain signal corresponding to the in-ear earphone at the frequency to be tested, so as to be used for the subsequent calculation of the transfer function of the bone conduction earphone.

[0108] Step S50, measuring the transfer function of the in-ear earphone, and calculating the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal.

[0109] Furthermore, after adjusting the amplitude and phase of the second audio signal, the transfer function of the in-ear earphone can be obtained by electroacoustic measurement to calculate the bone conduction transfer function of the bone conduction earphone at the frequency to be tested. In addition, after this step, the method further includes:

[0110] Traverse each frequency point of the bone conduction earphone, calculate the bone conduction transfer function corresponding to each frequency point, and obtain the preliminary bone conduction transfer function of the bone conduction earphone.

[0111] Similarly, each frequency point of the selected bone conduction headset is traversed to obtain the bone conduction transfer function corresponding to each frequency point, and the set of bone conduction transfer functions corresponding to each frequency point is used as the preliminary bone conduction transfer function. This step also includes:

[0112] Measuring preliminary bone conduction transfer functions obtained by several users wearing the bone conduction headphones;

[0113] The precise bone conduction transfer function of the bone conduction earphone is obtained according to the preliminary bone conduction transfer function corresponding to each of the users.

[0114] In order to further improve the accuracy of the bone conduction transfer function measurement results of the bone conduction headphones, the preliminary bone conduction transfer functions can be obtained by measuring multiple subjects wearing the bone conduction headphones, and then the results are averaged and approximated to obtain the precise bone conduction transfer function of the current bone conduction headphones.

[0115] In this embodiment, the frequency to be tested is obtained; a first audio signal is played through a bone conduction headset, and the frequency of the first audio signal is adjusted to the frequency to be tested; a second audio signal is played through an in-ear headset, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; the phase and amplitude of the second audio signal are adjusted respectively to determine the second frequency domain signal of the in-ear headset corresponding to the frequency to be tested; the transfer function of the in-ear headset is measured, and the bone conduction transfer function corresponding to the frequency to be tested is calculated based on the transfer function of the in-ear headset and the second frequency domain signal. The bone conduction transfer function of the bone conduction headset is indirectly calculated based on the second frequency domain signal and transfer function of the in-ear headset at the frequency to be tested, thereby improving the accuracy of the bone conduction transfer function measurement result, and there is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate.

[0116] Reference Figure 3 , Figure 3 for Figure 2 The specific flow chart of step S50 in the embodiment. Figure 2 In the embodiment shown, in this embodiment, the above step S50 includes:

[0117] Step S501, measuring the transfer function of the in-ear headphone by electroacoustic measurement;

[0118] Specifically, at the frequency point N to be tested, S1(N) H air (N) = - S2(N) H bone (N), which involves H air (N) is the transfer function of the in-ear headphone. The transfer function H air The measurement method of (N) is relatively common. For example, in an anechoic chamber or listening room, the earphones are worn on the silicone artificial ears of a head and torso simulator (commonly known as an artificial head). The earphones play a swept frequency signal and use the built-in microphone of the artificial ear to measure the transfer function H. air Substitute (N) into the formula to calculate the bone conduction transfer function at the frequency to be tested.

[0119] Step S502: Calculate the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear headphone, the first frequency domain signal, and the second frequency domain signal.

[0120] Furthermore, at the frequency point N to be tested, S1(N) H air (N) = - S2(N) H bone(N), where S1(N) is a frequency domain signal with a fixed frequency, phase and amplitude, and S2(N) has the same frequency as S1(N), and its amplitude and phase are adjusted and recorded. Therefore, S1(N) and S2(N) are known. The transfer function of the in-ear headphone is H air (N) is obtained through electroacoustic measurement, so the bone conduction transfer function H of the frequency to be tested can be quickly determined bone (N). Then, the bone conduction transfer function of the bone conduction earphone at each frequency point can be calculated by a similar method.

[0121] This embodiment uses the above scheme to specifically measure the transfer function of the in-ear headphones by electroacoustic measurement; and calculates the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear headphones, the first frequency domain signal, and the second frequency domain signal. Based on the functional relationship between the transfer function of the in-ear headphones, the first frequency domain signal, and the second frequency domain signal, the bone conduction transfer function of the bone conduction headphones is indirectly obtained by measuring the transfer function of the in-ear headphones. There is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate.

[0122] In addition, an embodiment of the present invention further provides a human ear bone conduction transfer function measurement device, the human ear bone conduction transfer function measurement device comprising:

[0123] An acquisition module is used to acquire the frequency point to be tested;

[0124] A first playing module, used for playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested;

[0125] A second playing module, configured to play a second audio signal through an in-ear headphone, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal;

[0126] An adjustment module, configured to adjust the phase and amplitude of the second audio signal respectively, and determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested;

[0127] A calculation module is used to measure the transfer function of the in-ear earphone and calculate the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal.

[0128] Since different users have different wearing styles, bone density and conductivity of the bone system around the ear, and hearing loss conditions are also different, the human ear bone conduction transfer function measurement method in the embodiment of the present invention can be applied to the supporting software to correct the transfer function of the bone conduction hearing aid to obtain a better hearing effect. The specific application steps include:

[0129] The user correctly wears the bone conduction hearing aid, which is connected to a mobile phone or computer via Bluetooth; the corresponding software is opened, and the user's hearing adaptation test is performed using signals of some frequencies. In this embodiment, the frequencies used are 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, and 8kHz; for each frequency, the volume is increased from the minimum until the user can hear it, and the volume at the time of stopping is confirmed. Each frequency is confirmed three times to improve the confidence of the data; each frequency is measured, and the transfer function of the bone conduction hearing aid is corrected according to the measurement results, so as to obtain a better hearing aid effect. In addition, an embodiment of the present invention further proposes a terminal device, the terminal device includes a memory, a processor, and a human ear bone conduction transfer function measurement program stored in the memory and executable on the processor, and the human ear bone conduction transfer function measurement program is executed by the processor to implement the steps of the human ear bone conduction transfer function measurement method as described above.

[0130] Since all the technical solutions of all the aforementioned embodiments are adopted when the ear bone conduction transfer function measurement program is executed by the processor, it at least has all the beneficial effects brought by all the technical solutions of all the aforementioned embodiments, which will not be described one by one here.

[0131] In addition, an embodiment of the present invention also proposes a computer-readable storage medium, on which a human ear bone conduction transfer function measurement program is stored. When the human ear bone conduction transfer function measurement program is executed by a processor, the steps of the human ear bone conduction transfer function measurement method described above are implemented.

[0132] Since all the technical solutions of all the aforementioned embodiments are adopted when the ear bone conduction transfer function measurement program is executed by the processor, it at least has all the beneficial effects brought by all the technical solutions of all the aforementioned embodiments, which will not be described one by one here.

[0133] Compared with the prior art, the human ear bone conduction transfer function measurement method, device, terminal device and medium proposed in the embodiments of the present invention obtain the frequency to be tested; play a first audio signal through a bone conduction headset, and adjust the frequency of the first audio signal to the frequency to be tested; play a second audio signal through an in-ear headset, wherein the frequency of the second audio signal corresponds to the frequency of the first audio signal; adjust the phase and amplitude of the second audio signal respectively to determine the second frequency domain signal of the in-ear headset corresponding to the frequency to be tested; measure the transfer function of the in-ear headset, and calculate the bone conduction transfer function corresponding to the frequency to be tested based on the transfer function of the in-ear headset and the second frequency domain signal. The bone conduction transfer function of the bone conduction headset is indirectly calculated based on the second frequency domain signal and transfer function of the in-ear headset at the frequency to be tested, thereby improving the accuracy of the measurement result of the human ear bone conduction transfer function, and there is no need to collect signals in the ear canal, and there is no need to use complex collection equipment. The method is convenient and easy to operate.

[0134] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0135] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0136] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

[0137] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for measuring human ear bone conduction transfer function, characterized in that: The method for measuring the human ear bone conduction transfer function comprises the following steps: Get the frequency point to be tested; Playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested; Playing a second audio signal through the in-ear headset, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal; The phase and amplitude of the second audio signal are adjusted respectively to determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested; The transfer function of the in-ear earphone is measured, and the bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear earphone and the second frequency domain signal.

2. The method for measuring the human ear bone conduction transfer function according to claim 1, characterized in that: The step of obtaining the frequency point to be tested comprises: Determining a frequency distribution range and an emphasis range of the first audio signal; Selecting a basic frequency point from the distribution range according to a logarithmic characteristic; Selecting additional frequency points from the focus range; The basic frequency point and the added frequency point are used as the frequency points of the bone conduction earphone, wherein the frequency points include the frequency point to be tested.

3. The method for measuring the human ear bone conduction transfer function according to claim 1, characterized in that: After the step of playing the first audio signal through the bone conduction earphone and adjusting the frequency of the first audio signal to the frequency to be tested, the method further includes: adjusting a phase of the first audio signal to a first phase; Adjusting the amplitude of the first audio signal to a first amplitude, wherein the first audio signal corresponding to the first amplitude reaches a first volume threshold; The first phase and the first amplitude are recorded as a first frequency domain signal of the bone conduction headset corresponding to the frequency point to be tested.

4. The method for measuring the human ear bone conduction transfer function according to claim 3, characterized in that: The step of adjusting the phase and amplitude of the second audio signal respectively to determine the second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested comprises: Adjusting the phase of the second audio signal to a second phase, wherein the second audio signal corresponding to the second phase reaches a second volume threshold; adjusting the amplitude of the second audio signal to a second amplitude, wherein the second audio signal corresponding to the second amplitude reaches a third volume threshold; The second phase and the second amplitude are recorded as a second frequency domain signal of the in-ear headphone corresponding to the frequency point to be tested.

5. The method for measuring the human ear bone conduction transfer function according to claim 4, characterized in that: The step of measuring the transfer function of the in-ear earphone and calculating the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal comprises: Measuring the transfer function of the in-ear headphone by electroacoustic measurement; The bone conduction transfer function corresponding to the frequency point to be tested is calculated according to the transfer function of the in-ear headphone, the first frequency domain signal and the second frequency domain signal.

6. The method for measuring the human ear bone conduction transfer function according to claim 1, characterized in that: After the step of measuring the transfer function of the in-ear earphone and calculating the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal, the step further includes: Traverse each frequency point of the bone conduction earphone, calculate the bone conduction transfer function corresponding to each frequency point, and obtain the preliminary bone conduction transfer function of the bone conduction earphone.

7. The method for measuring the human ear bone conduction transfer function according to claim 6, characterized in that: After the step of traversing each of the frequency points, calculating the bone conduction transfer function corresponding to each of the frequency points, and obtaining the preliminary bone conduction transfer function of the bone conduction earphone, the following step further comprises: Measuring preliminary bone conduction transfer functions obtained by several users wearing the bone conduction headphones; The precise bone conduction transfer function of the bone conduction earphone is obtained according to the preliminary bone conduction transfer function corresponding to each of the users.

8. A device for measuring human ear bone conduction transfer function, characterized in that: The human ear bone conduction transfer function measuring device comprises: An acquisition module is used to acquire the frequency point to be tested; A first playing module, used for playing a first audio signal through a bone conduction headset, and adjusting the frequency of the first audio signal to the frequency to be tested; A second playing module, configured to play a second audio signal through an in-ear headphone, wherein a frequency of the second audio signal corresponds to a frequency of the first audio signal; An adjustment module, configured to adjust the phase and amplitude of the second audio signal respectively, and determine a second frequency domain signal corresponding to the in-ear headphone at the frequency point to be tested; A calculation module is used to measure the transfer function of the in-ear earphone and calculate the bone conduction transfer function corresponding to the frequency point to be tested according to the transfer function of the in-ear earphone and the second frequency domain signal.

9. A terminal device, characterized in that: The terminal device includes a memory, a processor, and a human ear bone conduction transfer function measurement program stored in the memory and executable on the processor. When the human ear bone conduction transfer function measurement program is executed by the processor, the steps of the human ear bone conduction transfer function measurement method as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a human ear bone conduction transfer function measurement program, which, when executed by a processor, implements the steps of the human ear bone conduction transfer function measurement method as described in any one of claims 1 to 7.

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