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Hearing testing equipment and methods

A technology of hearing test and equipment, applied in the direction of audiometer, diagnostic recording/measurement, diagnosis using pressure, etc., which can solve the problems of redundant data, reduced signal-to-noise ratio, and not considered

Active Publication Date: 2020-10-20
NATUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such methods lead to redundant data and lead to the problem of reduced signal-to-noise ratio compared to single-tone signals
[0006] Also, the new method is not considered a standard endorsed by authorities, audiologists, and other medical professionals

Method used

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  • Hearing testing equipment and methods
  • Hearing testing equipment and methods
  • Hearing testing equipment and methods

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0092] Example 1 (negative pressure scan, P TPP or ambient pressure)

[0093] 1. Apply a first pressure (eg, P + =200daPa) and using the first broadband signal S 1 Obtain / measure the complex admittance Y(f, P + ).

[0094] 2. With the first tone signal T 1 (eg, at 226Hz) made from the first pressure (P + ) to the second pressure (P - ) of the first tympanogram.

[0095] 3. Optional: using a second broadband signal S 2 Measure the complex admittance Y(f, P at the second pressure - ).

[0096] 4. Apply a third pressure (e.g., P derived from the first tympanogram TTP or ambient pressure) and using a third broadband signal S 3 Obtain / measure the complex admittance Y(f, P TPP or P def ).

[0097] 5. Determination of the middle ear resonance frequency f based on the complex admittance measured at the first pressure and the third pressure RES .

[0098] 6. Optional: use a device that has a resonance frequency f in the middle ear RES : Y(f RES , P) the second tone si...

example 2

[0100] Example 2 (positive pressure scan, P TPP or ambient pressure)

[0101] 1. Apply the first pressure P - (for example, P - =-400dapa) and using the first broadband signal S 1 Obtain / measure the complex admittance Y(f, P - ).

[0102] 2. With the first tone signal T 1 (eg, at 226Hz) made from the first pressure (P - ) to the second pressure (P + ) of the first tympanogram.

[0103] 3. Optional: using a second broadband signal S 2 Measure the complex admittance Y(f, P + ).

[0104] 4. Apply a third pressure (e.g., P derived from the first tympanogram TTP or ambient pressure) and using a third broadband signal S 3 Obtain / measure the complex admittance Y(f, P TPP or P def ).

[0105] 5. Determination of the middle ear resonance frequency f based on the complex admittance measured at the first pressure and the third pressure RES .

[0106] 6. Optional: use a device that has a resonance frequency f in the middle ear RES : Y(f RES , P) the second tone signal T...

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PUM

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Abstract

An audiologic test apparatus includes: a pump device configured to apply a first pressure to the ear canal; and a processing module for communicatively coupling to the pump device and to a signal generator, wherein the processing module is configured to obtain first acoustic parameter values indicative of an acoustic parameter at the first pressure based on a first broadband signal generated using the signal generator; wherein the pump device is configured to change the first pressure to a changed pressure, and wherein the pump device is also configured to apply a second pressure to the ear canal; and wherein the processing module is also configured to obtain second acoustic parameter values indicative of the acoustic parameter at the second pressure based on a second broadband signal generated using the signal generator, and determine a middle ear resonance frequency based on the first and second acoustic parameter values.

Description

technical field [0001] The present disclosure relates to hearing testing apparatus and related methods, in particular for performing tympanometry in the ear canal of a subject. In particular, audiometry apparatus and associated methods for measuring one or more ear parameters, including middle ear resonance frequencies, are disclosed. Background technique [0002] Hearing tests, such as tympanometry, check the condition of the middle ear, the mobility of the eardrum and / or bone conduction by creating pressure changes in the ear canal. To modify the pressure, a probe is inserted into the ear canal to form an airtight seal of the ear canal. [0003] Hearing tests are conventionally performed by transmitting to the eardrum a continuous tone with a dominant component at a dominant frequency of 226 Hz and measuring the signal reflected by the eardrum via a microphone. The choice of 226 Hz is the de facto standard when performing tympanometry to obtain a tympanogram in adults. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/12
CPCA61B5/126A61B5/0053A61B5/125
Inventor A·博耶森
Owner NATUS MEDICAL
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