A method and system for analyzing middle ear acoustic impedance by using input electrical impedance parameters

A technology of input resistance and parameter analysis, applied in application, medical science, diagnosis, etc., to achieve the effect of simple analysis equipment and middle ear analysis device

Active Publication Date: 2021-05-14
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the calibration platform of air-bone conduction devices cannot fully simulate the characteristics of real people and the differences of hearing individuals, the subjective air conduction hearing threshold test and bone conduction hearing threshold test cannot fully represent the conduction differences of air-bone conduction

Method used

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  • A method and system for analyzing middle ear acoustic impedance by using input electrical impedance parameters
  • A method and system for analyzing middle ear acoustic impedance by using input electrical impedance parameters
  • A method and system for analyzing middle ear acoustic impedance by using input electrical impedance parameters

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Embodiment 1

[0064] refer to figure 2 The flow chart of the structure of the acoustic immittance measurement method shown in this embodiment will be described. The pressure in the human ear canal is adjusted and monitored in real time through the pressure pump, and the pressure value is output to the middle ear function analysis module. The receiver applies sound pressure of certain frequencies to the human ear, and the detection circuit of the receiver calculates the input impedance online. An electro-acoustic analogy model is established for the electro-acoustic transduction mechanism inside the receiver. The current middle ear acoustic immittance is calculated by combining the electroacoustic analog model, the structural parameters of the ear canal, and the online measurement of electrical impedance. The middle ear acoustic impedance value and the corresponding ear canal pressure value are jointly used to judge the middle ear function.

[0065] Step 1): Apply pressure to the ear can...

Embodiment 2

[0072] refer to image 3 The flow chart of the structure of the acoustic immittance measurement method shown in this embodiment will be described. The pressure in the human ear canal is adjusted and monitored in real time through the pressure pump, and the pressure value is output to the middle ear function analysis module. The receiver applies sound pressure of certain frequencies to the human ear, and the detection circuit of the receiver calculates the input impedance online. Based on the electrical impedance and the corresponding middle ear acoustic immittance measurement database, a correlation model of electrical impedance and acoustic immittance was established. Based on the correlation model of electrical impedance and acoustic immittance, the middle ear acoustic immittance is calculated according to the online measurement value of electrical impedance. The middle ear function is judged jointly according to the middle ear acoustic impedance value and the correspondin...

Embodiment 3

[0082] refer to Figure 5 The flow chart of the structure of the acoustic immittance measurement method shown in this embodiment will be described. The acoustic immittance is obtained by jointly calculating or partially jointly calculating the electroacoustic analog model, the electrical impedance and the middle ear acoustic immittance correlation model.

[0083] Step 1): Based on the electrical impedance and the corresponding middle ear acoustic immittance measurement database, establish an electrical impedance and acoustic immittance correlation model through deep learning or other methods;

[0084] Step 2): Apply pressure to the ear canal through the pressure pump;

[0085] Step 3): Send out sound pressure in a certain frequency range and amplitude to the ear canal of the human ear through the receiver;

[0086] Step 4): measuring the receiver input impedance based on the receiver detection circuit;

[0087] Step 5): Based on the electrical impedance and acoustic immitta...

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Abstract

The invention discloses a method for analyzing the acoustic conductance of the middle ear by using input electrical impedance parameters. The method calculates the acoustic conductance of the middle ear by measuring the electrical impedance of a receiver. The method includes: within a predetermined ear canal pressure range , put pressure on the subject's ear canal; send a sound pressure signal with a certain frequency range and amplitude to the subject's ear canal through the receiver; measure the input electrical impedance of the receiver based on the pre-built receiver detection circuit; according to the input electrical impedance of the receiver , based on the pre-established acoustic immittance calculation model, obtain the middle ear acoustic impedance under the pressure value; traverse the ear canal pressure range, repeat the above steps, and output the set of pressure values ​​applied to the subject's ear canal and the corresponding middle ear Otoacoustic Immittance collection. The invention uses the electrical impedance parameters of the receiver to calculate and measure the middle ear acoustic conductance, so that the middle ear acoustic conductance measurement and analysis device no longer depends on the built-in microphone in the ear canal, and is more convenient.

Description

technical field [0001] The invention relates to the field of middle ear acoustic immittance audiometry, in particular to a method and system for analyzing middle ear acoustic impedance by using input electrical impedance parameters. Background technique [0002] Acoustic Immittance Test is a medical testing instrument that tests the transmission state of sound energy in the human ear. It can be used as a means to test the function of the sound conduction path in the middle ear, and can be used to detect the state of the tympanic membrane, the bone conduction of the ossicular chain, and the function of the Eustachian tube. , Auditory implant function debugging, stapedius reflex threshold test, etc. After the sound wave reaches the external auditory canal as a form of force, a certain sound pressure acts on the tympanic membrane, and the middle ear system and the inner ear move accordingly. The measurement is calculated to calculate the acoustic immittance of the middle ear. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/12
CPCA61B5/125A61B5/126
Inventor 桑晋秋张芳杰郑成诗李晓东
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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