Noise reduction system of otoacoustic probe and otoacoustic probe

Abstract

The utility model discloses a noise reduction system of an otoacoustic probe and the otoacoustic probe. The noise reduction system comprises a sound production module, a first acquisition module, a first amplification module, a signal processing module and a signal output module, the signal output module is used for receiving the audio energy of the first acquisition module and the second acquisition module in real time, obtaining a relation value of the signal processing module, obtaining the audio energy of the target ear canal according to the audio energy of the first acquisition module, the audio energy of the second acquisition module and the relation value which are received in real time, and outputting the audio energy of the target ear canal. The audio energy of the target ear canal represents the audio energy of the ear canal after noise reduction. An otoacoustic probe comprises a controller, a loudspeaker, a first microphone and a second microphone, and the controller realizes a noise reduction system of the otoacoustic probe. The utility model discloses a noise reduction system of an otoacoustic probe, which is used for reducing the noise of audio energy in an auditory meatus by collecting the audio energy in the auditory meatus and outside the ear, and improving the accuracy and reliability of hearing detection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the utility model relates to hearing detection technical field, especially ear sound probe's noise reduction system and ear sound probe. BACKGROUND

[0002] Otoacoustic emission (OAE) is the sound energy which is originated from cochlea and can be recorded in ear canal, and reflects the activity of active biophysical mechanism in cochlea. OAE test is an objective and non-invasive cochlear function examination method, which can quickly and non-invasively reflect the functional state of cochlear outer hair cells and sound transmission structure, and has important application value in the diagnosis and treatment of clinical hearing diseases.

[0003] The ear sound probe of the existing otoacoustic emission audiometer only collects the audio energy in the ear canal, and ignores the influence of environmental noise, which affects the collection of otoacoustic emission. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model adopts the following technical scheme:

[0005] A noise reduction system of ear sound probe, comprising a sound emitting module, a first collecting module, a first amplifying module, a signal processing module and a signal output module;

[0006] The sound emitting module emits sound waves.

[0007] The first collecting module is used for collecting the audio energy of the ear canal in different environments.

[0008] The second collecting module is used for collecting the audio energy outside the ear in different environments.

[0009] The signal processing module is used for receiving the audio energy of the first collecting module and the second collecting module in different environments, and calculating the relationship value of the audio energy of the first collecting module and the second collecting module in different environments.

[0010] The signal output module is used for receiving the audio energy of the first collecting module and the second collecting module in real time, obtaining the relationship value of the signal processing module, and obtaining the audio energy of the target ear canal according to the real-time received audio energy of the first collecting module, the audio energy of the second collecting module and the relationship value, wherein the audio energy of the target ear canal represents the audio energy of the ear canal after noise reduction.

[0011] Further, the signal processing module comprises:

[0012] The amplifying module: the audio energy of the ear canal and the audio energy outside the ear are amplified and processed respectively.

[0013] The gain module: the audio energy outside the ear is gain-processed.

[0014] Subtraction module: the relationship value is obtained by using the difference between the audio energy of the ear canal and the audio energy outside the ear.

[0015] An ear sound probe comprises a controller, a loudspeaker, a first microphone and a second microphone, the loudspeaker and the first microphone and the second microphone are electrically connected with the controller; the first microphone is used for collecting the sound inside the ear canal, the second microphone is used for collecting the sound outside the ear, and the controller realizes the noise reduction system of the ear sound probe.

[0016] Further, the loudspeaker, the first microphone and the second microphone are fixedly installed in the first shell.

[0017] Further, the first conduit is connected with the first shell, and one end of the first conduit is inserted into the ear canal.

[0018] Further, the second shell and the third shell are further included, the second shell is used for fixing and installing the loudspeaker and the first microphone, and the third shell is used for fixing and installing the second microphone.

[0019] Further, the fixing clamp is connected with the second microphone.

[0020] Further, the second conduit is connected with the second shell, and one end of the second conduit is inserted into the ear canal.

[0021] The ear sound probe has the advantages that:

[0022] The noise reduction system of the ear sound probe collects the audio energy inside and outside the ear canal, reduces the noise of the audio energy inside the ear canal, improves the accuracy and reliability of hearing detection, and provides strong technical support for the diagnosis and treatment of hearing impairment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the noise reduction system of the ear sound probe of the utility model;

[0024] Figure 2 is a structural schematic view of the ear sound probe of the utility model;

[0025] Figure 3 is a structural schematic view of another ear sound probe of the utility model;

[0026] As shown in the figure: 1-ear, 101-ear canal;

[0027] 201 - first conduit, 202 - horn, 203 - first microphone, 204 - second microphone, 205 - controller, 206 - first housing, 207 - wiring harness

[0028] 301 - second conduit, 302 - second housing, 303 - third housing. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments of the present application. It should be understood that the present application is not limited to the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In addition, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0032] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Example 1

[0034] As Figure 1As shown, a noise reduction system of an otoacoustic probe includes a sound emission module, a first acquisition module, a first amplification module, a signal processing module, and a signal output module.

[0035] The sound emission module emits sound waves.

[0036] The first acquisition module is configured to acquire audio energy of an ear canal in different environments.

[0037] The second acquisition module is configured to acquire audio energy outside the ear in different environments.

[0038] The signal processing module is configured to receive the audio energy of the first acquisition module and the second acquisition module in different environments, and calculate a relationship value of the audio energy of the first acquisition module and the second acquisition module in different environments.

[0039] The signal output module is configured to receive the audio energy of the first acquisition module and the second acquisition module in real time, obtain the relationship value of the signal processing module, and obtain target audio energy of the ear canal according to the real-time received audio energy of the first acquisition module, the audio energy of the second acquisition module, and the relationship value. The target audio energy of the ear canal represents the audio energy of the ear canal after noise reduction.

[0040] Further, the signal processing module includes:

[0041] The amplification module: amplifies the audio energy of the ear canal and the audio energy outside the ear respectively.

[0042] The gain module: performs gain processing on the audio energy outside the ear.

[0043] The subtraction module: obtains the relationship value by using the difference relationship between the audio energy of the ear canal and the audio energy outside the ear.

[0044] Specifically, the cochlea transmits the audio energy released into the external ear canal through the ossicular chain and the eardrum, which is called otoacoustic emission, and is used for detecting hearing. The audio energy inside the ear canal and the audio energy outside the ear are collected. Signal amplification processing: In order to improve the accuracy and sensitivity of signal processing, the audio energy inside the ear canal and the audio energy outside the ear are amplified. Gain processing: The gain processing is performed on the audio energy value outside the ear, and the noise component is further highlighted. The subtraction processing uses the difference method to perform noise reduction processing on the collected audio energy inside the ear canal, and averages multiple noise values measured in the same environment to obtain the relationship value in this environment. Machine learning algorithms such as linear regression and neural networks can be used to train the relationship value. By continuously adjusting the model parameters and training strategies, the noise reduction effect is optimized. The real-time collected audio energy inside the ear canal and the audio energy outside the ear are combined with the relationship value to obtain the target audio energy of the ear canal. The target audio energy of the ear canal represents the audio energy of the ear canal after noise reduction, that is, the audio energy inside the ear canal is relatively pure after removing environmental noise interference.

[0045] A noise reduction system of an ear sound probe, by collecting audio energy inside and outside the ear canal, reducing noise for audio energy inside the ear canal, improving the accuracy and reliability of hearing detection, providing strong technical support for the diagnosis and treatment of hearing impairment.

[0046] Embodiment 2

[0047] As shown in Figure 2 An ear sound probe, comprising a controller 205, a loudspeaker 202, a first microphone 203 and a second microphone 204, the loudspeaker 202 and the first microphone 203, the second microphone 204 are electrically connected with the controller 205; the first microphone 203 is used for collecting the sound inside the ear canal 101, the second microphone 204 is used for collecting the sound outside the ear, and the controller 205 realizes the noise reduction system of the ear sound probe as described above.

[0048] Further, it further comprises a first shell 206, the first shell 206 fixedly installs the loudspeaker 202, the first microphone 203 and the second microphone 204. It further comprises a first conduit 201, the first conduit 201 is connected with the first shell 206, one end of the first conduit 201 is inserted into the ear canal 101.

[0049] Specifically, the second microphone 204 for collecting the sound outside the ear canal 101 can be integrated in the first shell 206, the loudspeaker 202, the first microphone 203 and the second microphone 204 are connected to the controller through the wire harness 207. The first microphone 203 is directed towards the inside of the ear canal 101, collecting the audio energy of the ear canal 101, the second microphone 204 is directed towards the outside of the ear canal 101, collecting the ambient sound. The end of the first conduit 201 is made of soft material, such as silica gel, which facilitates the insertion of the ear sound probe into the ear canal 101, and facilitates sound transmission. An ear sound probe, the setting of double microphones and the noise reduction system in the controller 205 realize efficient noise reduction, so as to collect more pure ear sound audio energy.

[0050] Embodiment 3

[0051] As shown in Figure 3 An ear sound probe, comprising a controller 205, a loudspeaker 202, a first microphone 203 and a second microphone 204, the loudspeaker 202 and the first microphone 203, the second microphone 204 are electrically connected with the controller 205; the first microphone 203 is used for collecting the sound inside the ear canal 101, the second microphone 204 is used for collecting the sound outside the ear, and the controller 205 realizes the noise reduction system of the ear sound probe as described above.

[0052] Further, a second housing 302 is included to fix the speaker 202 and the first microphone 203, and a third housing 303 is included to fix the second microphone 204. A fixing clip is also included to connect the second microphone 204. A second conduit 301 is also included to connect the second housing 302, and the second conduit 301 is inserted into the ear canal 101 at one end.

[0053] In particular, the second microphone 204, which collects sound outside the ear canal 101, can be used alone, and can be hung on the ear bone, pasted on the ear bone, or clamped on the ear bone by the fixing clip. The speaker 202, the first microphone 203, and the second microphone 204 are all connected to the controller through the wire harness 207. The first microphone 203 is directed towards the inside of the ear canal 101 to collect audio energy of the ear canal 101, and the second microphone 204 is directed towards the outside of the ear canal 101 to collect ambient sound. The end of the second conduit 301 is made of soft material, such as silicone, to facilitate insertion of the ear sound probe into the ear canal 101, and to facilitate sound transmission. The ear sound probe, the arrangement of the two microphones, and the noise reduction system in the controller 205 achieve efficient noise reduction, so that the collected ear sound audio energy is more pure.

[0054] It is also important to note that the use of relational terms such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0055] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to implement or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A noise reduction system for an ear sound probe, the system comprising: The ear sound probe comprises a sound emitting module, a first collecting module, a first amplifying module, a signal processing module and a signal output module. The sound emitting module emits sound waves. The first collecting module is used for collecting audio energy of the ear canal in different environments. The second collecting module is used for collecting audio energy outside the ear in different environments. The signal processing module is used for receiving audio energy of the first collecting module and the second collecting module in different environments, and calculating a relationship value of the audio energy of the first collecting module and the second collecting module in different environments. The signal output module is used for receiving audio energy of the first collecting module and the second collecting module in real time, obtaining the relationship value of the signal processing module, and obtaining audio energy of a target ear canal according to the audio energy of the first collecting module, the audio energy of the second collecting module and the relationship value received in real time, wherein the audio energy of the target ear canal represents audio energy of the ear canal after noise reduction.

2. The noise reduction system of an ear sound probe according to claim 1, characterized in that, The signal processing module comprises: The amplifying module is used for amplifying audio energy of the ear canal and audio energy outside the ear respectively. The gain module is used for gain processing of the audio energy outside the ear. The subtraction module is used for obtaining the relationship value by using a difference relationship between the audio energy of the ear canal and the audio energy outside the ear.

3. An ear sound probe, characterized in that The ear sound probe comprises a controller, a loudspeaker, a first microphone and a second microphone, wherein the loudspeaker, the first microphone and the second microphone are electrically connected with the controller; the first microphone is used for collecting sound inside the ear canal, the second microphone is used for collecting sound outside the ear, and the controller realizes the noise reduction system of the ear sound probe as claimed in claim 1 or 2.

4. An ear sound probe according to claim 3, characterized in that The ear sound probe further comprises a first shell, wherein the first shell is used for fixedly mounting the loudspeaker, the first microphone and the second microphone.

5. An ear sound probe according to claim 4, characterized in that The ear sound probe further comprises a first conduit, wherein the first conduit is connected with the first shell, and one end of the first conduit is inserted into the ear canal.

6. An ear sound probe according to claim 3, characterized in that The ear sound probe further comprises a second shell and a third shell, wherein the second shell is used for fixedly mounting the loudspeaker and the first microphone, and the third shell is used for fixedly mounting the second microphone.

7. An ear sound probe according to claim 6, characterized in that The ear sound probe further comprises a fixing clamp, wherein the fixing clamp is connected with the second microphone.

8. An ear sound probe according to claim 6 or 7, characterized in that The ear sound probe further comprises a second conduit, wherein the second conduit is connected with the second shell, and one end of the second conduit is inserted into the ear canal.

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