CN109498030B - Free sound field hearing test system and method - Google Patents
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Abstract
The invention discloses a hearing test system and method of a free sound field, and relates to the field of hearing tests. The method comprises the following steps: playing a test sound with a set sound frequency and a set sound loudness, and defining the sound loudness as a first loudness; receiving the test sound, calculating and obtaining the sound loudness of the position of the test sound at the receiving position, and defining the sound loudness as a second loudness; performing hearing feedback to test whether the sound is heard; and D, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback. During the hearing test, the loudness or frequency of the test sound can be reset by the computer device to perform the test according to the hearing feedback of the user on whether the test sound is heard. The technical scheme of the invention can accurately acquire the loudness heard at the positions of the human ears without being influenced by the testing distance; and the accuracy is higher by carrying out calibration through an algorithm in a hearing aid DSP.
Description
Technical Field
The invention relates to the field of hearing tests, in particular to a hearing test system and a hearing test method for a free sound field.
Background
At present, with the great way between smart phones and apps, a method for performing simple hearing tests through a mobile phone app + earphone appears. In this method, the subject wears headphones in a relatively quiet environment and operates according to the guidance of the app. The App broadcasts sound signals with different frequencies and different loudness, and inquires whether the testee hears the sound signals. According to the result selected by the user, loudness data which can be heard by the user at different frequencies, namely a hearing curve of the user, is obtained.
First, the accuracy of the test results in this manner depends on the calibration of the handset and headset, which is cumbersome because of the variety of hardware used by the user.
Secondly, when tested by earphone sounding, sound does not come from a free sound field (meaning that sound is propagated from air to the ear canal in a relatively open space, rather than being sounded directly in the ear canal by a speaker), which is the sound field that people listen to in most living scenarios. If the sound in the free sound field can be used for testing, the sound testing method is closer to the actual situation, and the testing result can be better used for subsequent hearing testing work.
However, if the earphone is removed and the mobile phone is directly used for playing the sound signal, a problem needs to be solved: the change of the distance between the mobile phone and the human ear can influence the loudness of the sound signal actually heard by the user, and the distance cannot be fixed in the actual test process, so that effective calibration is difficult to realize.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a free sound field hearing test system and a free sound field hearing test method, which can solve the problems that the loudness of sound signals actually heard by a user is influenced by the change of the distance during the free sound field hearing test, and the distance cannot be fixed in the actual test process, so that effective calibration is difficult to realize.
The invention adopts the following specific technical scheme:
in a first aspect, the present invention provides a free sound field hearing test system, including:
a computer device with a sound player and a hearing aid, said computer device and said hearing aid communicating via a network connection;
the computer device is provided with a test APP for:
setting the playing frequency of the test sound, and sending a frequency instruction to the hearing aid;
setting the playing loudness of the test sound, wherein the playing loudness is a first loudness;
driving a sound player to play the test sound according to the playing frequency and the playing loudness;
sending a playing completion instruction to the hearing aid;
inquiring and confirming whether the test sound is heard by the user;
receiving a second loudness transmitted by the hearing aid;
and according to the second loudness, correcting and outputting a hearing test result
A hearing aid for:
after receiving the frequency command, calculating the receiving loudness of the test sound at the hearing aid according to the collected test sound, wherein the receiving loudness is a second loudness;
after receiving a playing completion instruction, sending a second loudness to the computer device;
further, the network connection is a BLE communication connection.
Further, the frequency instruction includes a playing frequency value of the test sound.
Further, the driving sound player plays the test sound according to a playing frequency and a playing loudness, including:
and driving a sound player to play the test sound for 1s according to the playing frequency and the playing loudness.
Further, the querying and confirming whether the user hears the test sound comprises:
the inquiry and confirmation is carried out by means of a graphical user interface or voice feedback.
In a second aspect, the present invention provides a free sound field hearing test method, including:
a, playing a test sound with a set sound frequency and a set sound loudness, and defining the sound loudness as a first loudness;
b, receiving the test sound, calculating and obtaining the sound loudness of the position of the test sound at the receiving position, and defining the sound loudness as a second loudness;
c, performing hearing feedback for testing whether the sound is heard;
and D, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback.
Further, the test sounds are in multiple groups, and the corresponding first loudness, second loudness and sound frequency are in multiple groups.
Further, the D includes:
when a test sound having a set sound frequency is played,
first upper loudness bound: the initial value is 100%; first lower loudness bound: the initial value is 0%; the first loudness is: the initial value is 50%,
s1, setting the sound loudness of the test sound, and defining the sound loudness as a first loudness;
s2, if the test sound is heard, recording the second loudness minimum sound as the current second loudness, and setting the first loudness upper bound as the first loudness (the first loudness upper bound + the first loudness lower bound)/2, and proceeding to step S4;
s3, if the test sound is not heard, setting a first lower loudness limit (first loudness) (first upper loudness limit + first lower loudness limit)/2;
s4, when (upper first loudness bound-lower first loudness bound) <1%, outputting a second loudness minimum sound as a test result of the current sound frequency; otherwise, go back to step S1.
In a third aspect, the present invention provides a digital hearing aid, including a microphone, a preamplifier, an a/D converter, a DSP chip, a D/a converter, and an earphone, where the DSP chip stores at least one program, and the at least one program is executed to implement the free sound field hearing test method.
In a fourth aspect, the present invention provides a computer apparatus for free sound field hearing test, comprising a memory and a processor, wherein the memory stores at least one program, and the at least one program is executed by the processor to implement the free sound field hearing test method.
Further, the computer device is a mobile phone, a tablet, a notebook computer or a desktop computer.
The technical scheme provided by the invention has the beneficial effects that:
the invention discloses a hearing test system and a hearing test method for a free sound field, wherein the method comprises the following steps: playing a test sound with a set sound frequency and a set sound loudness, and defining the sound loudness as a first loudness; receiving the test sound, calculating and obtaining the sound loudness of the position of the test sound at the receiving position, and defining the sound loudness as a second loudness; performing hearing feedback to test whether the sound is heard; and D, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback. During the hearing test, the loudness or frequency of the test sound can be reset by the computer device to perform the test according to the hearing feedback of the user on whether the test sound is heard. The technical scheme of the invention can accurately acquire the loudness heard at the positions of the human ears without being influenced by the testing distance; and the accuracy is higher by carrying out calibration through an algorithm in a hearing aid DSP.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 illustrates one possible free sound field hearing test system of the present invention;
FIG. 2 is a schematic diagram of a free sound field hearing test method according to the present disclosure;
FIG. 3 is a schematic diagram of a free sound field hearing test method according to the present invention;
fig. 4 is a schematic structural diagram of a computer apparatus for free sound field hearing test according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
It is easy to understand that, generally, the hearing situations of human ears are considered to be different, and in addition, in order to avoid the mutual influence of the ears, therefore, in the hearing test process, the left ear and the right ear are tested separately, when a single ear is tested, a certain measure is usually taken for the other ear to prevent the interference to the currently tested ear, and optionally, an earphone playing white noise can be worn.
The invention provides a free sound field hearing test system, which comprises:
a computer device with a sound player and a hearing aid, said computer device and said hearing aid communicating via a network connection;
the computer device is provided with a test APP, and in one possible implementation, the computer device is a mobile phone, a tablet, a laptop and other portable mobile terminals or a desktop computer. Fig. 1 shows a possible free sound field hearing test system of the present invention, which includes a mobile phone 101 and a hearing aid 102. The computer device herein implements a free sound field hearing test method in a system, and as shown in fig. 2, a schematic diagram of a free sound field hearing test method disclosed in the present invention shows specific implementation steps of the method, including:
in the following description of the embodiments, a mobile phone (a mobile phone is usually integrated with a sound player) is used for an exemplary description, but other computer apparatuses are also feasible, but a separate sound player may be required to be externally connected, as long as a related free sound field hearing test method can be implemented, and the technical scheme of the present invention is not limited.
In step 201, setting the frequency of the test sound, and sending a frequency instruction to the hearing aid;
before a user performs a hearing test, the user needs to select a relatively quiet environment to perform the test, so as to reduce external interference, wear the hearing aid, establish communication connection between the mobile phone and the hearing aid, perform communication connection by adopting a wired network or a wireless network in a possible practical operation, and perform communication connection more flexibly and conveniently in a practical test, preferably, through a Low Energy Bluetooth (BLE) Low Energy.
When the user is ready to start the hearing test, in this step, the tester or the user himself/herself may set the frequency of the test sound through the test APP installed on the mobile phone, and after confirming that the test is started, the test APP sends a frequency command to the hearing aid, where the frequency command is to inform the hearing aid of the frequency of the test sound that is currently ready to be played, and in one possible practical operation, the frequency command includes the playing frequency value of the test sound, for example: if the currently selected test sound frequency value is 1000 hz, the frequency instruction content includes a numerical content of 1000, and in another possible practical operation, the frequency value of the sound may also be numbered, and the frequency instruction content only includes the number corresponding to the frequency value of the sound.
In step 202, setting the playing loudness of the test sound, wherein the playing loudness is a first loudness;
when the frequency of the test sound is set by step 201, it is necessary to set its loudness, which in one possible practical implementation is to start with a sound of lower decibels, so that the lowest loudness of the decibels that can be received by the hearing impaired user can be tested.
In step 203, driving a sound player to play the test sound according to the playing frequency and the playing loudness;
in one possible implementation, the sound can be played by using an external speaker of the mobile phone, in another possible implementation, a sound box can also be used, and optionally, the mobile phone can be implemented by using an AUX interface of the mobile phone to be externally connected with an active sound box, and the mobile phone is used for playing the test sound after receiving an instruction of playing the test sound by the computer device. In one possible practical operation, the sound player is driven to play the test sound for a certain time, preferably 1s, according to the playing frequency and the playing loudness.
In step 204, sending a play completion instruction to the hearing aid;
after the current test sound is played, the test APP can send a play completion instruction to the hearing aid, and meanwhile, the hearing aid can be triggered to feed back the loudness value of the test sound to the test terminal, and the test terminal is optional and is the mobile phone 101.
In step 205, inquiring and confirming whether the user hears the test sound;
after the test sound is played, which is equivalent to the test process of the test sound is finished, the user needs to feed back the test result, and in possible actual operation, the mobile phone 101 inquires and confirms whether the user hears the test sound through a graphical user interface or a voice inquiry mode, so that the tester can perform subsequent hearing tests according to the feedback condition of the user.
In step 206, the second loudness transmitted by the hearing aid is received and the hearing test result is output according to the second loudness and the first loudness.
The free sound field hearing test system provided by the invention comprises a hearing aid 102 besides the computer device, wherein the hearing aid 102 is a digital hearing aid, and in one possible implementation, the hearing aid 102 comprises a microphone, a preamplifier, an A/D converter, a DSP chip, a D/A converter and an earphone, the DSP chip adopts a DSP chip with storage and calculation capabilities, such as BS300 and 5920 chips of an Ann semiconductor, at least one program is stored in the DSP chip, and when the at least one program is executed, the following steps are realized, and the system comprises:
and after receiving the frequency command, calculating the receiving loudness of the test sound at the hearing aid end according to the collected test sound, wherein the receiving loudness is a second loudness.
After receiving a playing completion instruction, sending a second loudness to the computer device;
in the step 202, although the loudness of the test sound is set by the test APP, since the sound is played in a free sound field, the sound loudness value received by the hearing aid varies, so that the hearing aid 102 is required to collect the sound signal, obtain the loudness of the sound signal through analysis and calculation, and feed back the loudness value of the sound signal actually received by the hearing aid 102 to the test APP, where the loudness value is the exact decibel of the sound actually heard by the user during the test. It should be noted that in one possible implementation, the method and process for the hearing aid 102 to calculate the second loudness is as follows:
the hearing aid receives a frequency command sent by a computer device, and comprises the following information: the frequency of the sound signal that the computer device will play in the next 1 second;
2. the hearing aid starts a monitoring microphone signal for 1 second, and stores the acquired sound signal in a cache of the DSP;
3. the computer device plays the sound signal through a loudspeaker of the computer device, and the time duration is 1 second;
4. the hearing aid DSP analyzes and calculates the data in the cache, and obtains the frequency spectrum distribution of the signal in the period of 1 second mainly through Fourier transformation; averaging the data of the corresponding frequency part in the frequency spectrum to obtain the intensity of the signal in the time period; the DSP carries out conversion processing according to a frequency response curve preset by the hearing aid and relevant to a microphone and a loudspeaker of the hearing aid, and converts the signal intensity into actual sound intensity second loudness (the unit is decibel);
5. and feeding back the second loudness to the computer device.
In the process of performing a hearing test on a user by using the free sound field hearing test system, when the user hears a test sound, the computer device resets the frequency of the test sound for performing the test, when the mobile phone 101 inquires and confirms whether the user hears the test sound in step 205, when the user hears the test sound, the computer device resets the loudness or frequency of the test sound for performing the test, and in a possible practical operation, the frequency of the test sound is set to be higher or lower, or the test sound with the same frequency but lower loudness is set for performing the test; when the user does not hear the test sound, the loudness of the test sound is reset by the computer means for testing, and in one possible practical operation, a higher loudness of the test sound is set for testing.
The invention also discloses a free sound field hearing test method, as shown in fig. 3, a schematic diagram of the free sound field hearing test method of the invention is shown, and the concrete implementation steps of the method are shown, including:
and step 304, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback.
The test sounds are in multiple groups, and the corresponding first loudness, second loudness and sound frequency are in multiple groups.
In one possible implementation, step 304 includes:
when a test sound having a set sound frequency is played,
first upper loudness bound: the initial value is 100%; first lower loudness bound: the initial value is 0%; the first loudness is: the initial value is 50%,
s1, setting the sound loudness of the test sound, and defining the sound loudness as a first loudness;
s2, if the test sound is heard, recording the second loudness minimum sound as the current second loudness, and setting the first loudness upper bound as the first loudness (the first loudness upper bound + the first loudness lower bound)/2, and proceeding to step S4;
s3, if the test sound is not heard, setting a first lower loudness limit (first loudness) (first upper loudness limit + first lower loudness limit)/2;
s4, when (upper first loudness bound-lower first loudness bound) <1%, outputting a second loudness minimum sound as a test result of the current sound frequency; otherwise, go back to step S1. The embodiment discloses a free sound field hearing test system and a method, wherein the method comprises the following steps: playing a test sound with a set sound frequency and a set sound loudness, and defining the sound loudness as a first loudness; receiving the test sound, calculating and obtaining the sound loudness of the position of the test sound at the receiving position, and defining the sound loudness as a second loudness; performing hearing feedback to test whether the sound is heard; and D, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback. During the hearing test, the loudness or frequency of the test sound can be reset by the computer device to perform the test according to the hearing feedback of the user on whether the test sound is heard. The technical scheme of the invention can accurately acquire the loudness heard at the positions of the human ears without being influenced by the testing distance; and the accuracy is higher by carrying out calibration through an algorithm in a hearing aid DSP.
The computer apparatus corresponding to fig. 1 is used for free sound field hearing test, and optionally, is a portable mobile terminal such as a mobile phone, a tablet, a notebook computer, or a desktop computer, and includes a memory and a processor, where at least one program is stored and executed by the processor to implement the free sound field hearing test method corresponding to fig. 2.
Fig. 4 shows a schematic structural diagram of a computer apparatus for free sound field hearing test according to an embodiment of the present invention, which mainly includes a processor 401, a memory 402 and a bus 403.
The processor 401 includes one or more processing cores, the processor 401 is connected to a memory 402 via a bus 403, the memory 402 is used for storing program instructions, and the processor 401, when executing the program instructions in the memory 402, implements the free sound field hearing test method provided by the above method embodiments.
Alternatively, memory 402 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The present invention also provides a computer readable storage medium having stored therein at least one instruction, at least one program, code set, or set of instructions, which is loaded and executed by the processor to implement the free sound field hearing test method provided by the above method embodiments.
Optionally, the present invention also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the free sound field hearing test method according to the above aspects.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by hardware related to instructions of a program, where the program may be stored in a computer readable storage medium, and the above mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A free-sound field hearing test system, comprising:
a computer device with a sound player and a hearing aid, said computer device and said hearing aid communicating via a network connection;
the computer device is provided with a test APP for:
setting the playing frequency of the test sound, and sending a frequency instruction to the hearing aid;
setting the playing loudness of the test sound, wherein the playing loudness is a first loudness;
driving a sound player to play the test sound according to the playing frequency and the playing loudness;
sending a playing completion instruction to the hearing aid;
inquiring and confirming whether the test sound is heard by the user;
receiving a second loudness transmitted by the hearing aid;
outputting a hearing test result according to the second loudness and the first loudness;
a hearing aid for:
after receiving the frequency command, calculating the receiving loudness of the test sound at the hearing aid according to the collected test sound, wherein the receiving loudness is a second loudness;
and after receiving a playing completion instruction, sending the second loudness to the computer device.
2. The free-sound field hearing test system of claim 1, wherein the network connection is a BLE communication connection.
3. The free sound field hearing test system of claim 1, wherein the frequency instruction includes a playback frequency value for the test sound.
4. The free sound field hearing test system of claim 1, wherein the playing the test sound comprises:
playing the test sound for 1 s.
5. The free sound field hearing test system of claim 1, wherein the querying and confirming whether the test sound is heard by the user comprises: the inquiry and confirmation is carried out by means of a graphical user interface or voice feedback.
6. The free sound field hearing test system of claim 1, wherein the system testing method comprises:
a, playing a test sound with a set sound frequency and a set sound loudness, and defining the sound loudness as a first loudness;
b, receiving the test sound, calculating and obtaining the sound loudness of the position of the test sound at the receiving position, and defining the sound loudness as a second loudness;
c, performing hearing feedback for testing whether the sound is heard;
and D, calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback.
7. The free-sound field hearing test system of claim 6, wherein the test sounds are in a plurality of groups, and the corresponding first loudness, second loudness, and sound frequencies are in each of the plurality of groups.
8. The free-sound field hearing test system according to claim 6, wherein the calculating and outputting a hearing test result according to the first loudness, the second loudness, the sound frequency and the hearing feedback comprises:
when a test sound having a set sound frequency is played,
first upper loudness bound: the initial value is 100%; first lower loudness bound: the initial value is 0%; the first loudness is: the initial value is 50%,
s1, setting the sound loudness of the test sound, and defining the sound loudness as a first loudness;
s2, if the test sound is heard, recording the minimum sound of the second loudness = the current second loudness, and setting the upper bound of the first loudness = the first loudness, and the first loudness = (upper bound of the first loudness + lower bound of the first loudness)/2, and proceeding to step S4;
s3, if the test sound is not heard, setting a lower bound of the first loudness = the first loudness, the first loudness = (upper bound of the first loudness + lower bound of the first loudness)/2;
s4, when (upper first loudness bound-lower first loudness bound) <1%, outputting a second loudness minimum sound as a test result of the current sound frequency; otherwise, go back to step S1.
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| CN110674340A (en) * | 2019-09-30 | 2020-01-10 | Oppo（重庆）智能科技有限公司 | Audio testing method and device, storage medium and terminal |
| CN111202527B (en) * | 2020-01-20 | 2023-01-24 | 乾凰(重庆)声学科技有限公司 | Objective test system for infant audiometry |
| CN111466919A (en) * | 2020-04-15 | 2020-07-31 | 深圳市欢太科技有限公司 | Hearing detection method, terminal and storage medium |
| CN113676824A (en) * | 2021-09-19 | 2021-11-19 | 武汉左点科技有限公司 | Hearing aid adaptability training method and device |
| CN114947833B (en) * | 2022-06-07 | 2023-07-04 | 深圳市听多多科技有限公司 | Hearing loss testing method based on earphone equipment and related equipment |
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