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Method and device for determining the amplification factor of a hearing aid

An amplification factor, hearing aid technology, applied in the adaptation of hearing aids for hearing loss, custom settings of hearing aids, and overall acoustic characteristics, etc.

Active Publication Date: 2018-02-27
SIVANTOS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the case of poor signal-to-noise ratio the amplification system is extremely small and thus numerically intractable (eg due to quantization errors)

Method used

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  • Method and device for determining the amplification factor of a hearing aid
  • Method and device for determining the amplification factor of a hearing aid
  • Method and device for determining the amplification factor of a hearing aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 The structure of a hearing aid according to the prior art is shown in a strongly simplified block diagram. A hearing aid basically has one or more input converters, amplifiers and output converters as main components. The input converter is usually an acoustic receiver (such as a microphone) or an electromagnetic receiver (such as an induction coil). Output transducers are mostly implemented as electroacoustic transducers (such as microspeakers or earpieces) or electromechanical transducers (such as bone conduction earpieces). Amplifiers are usually integrated in signal processing units. The principle structure is in figure 1 In the figure, the behind-the-ear hearing aid 1 is taken as an example. In the hearing aid housing 1 for wearing behind the ear, two microphones 2 for receiving sound from the environment are installed. A signal processing unit 3 , likewise integrated in the hearing aid housing 1 , processes the microphone signal and amplifies it. Th...

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PUM

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Abstract

For a hearing aid the amplification factor (Qi) is generated by means of the following steps: a molecule (Zi) is formed (142) comprising a sum having an intensity (Xpi) of the signal (Xi) which will be approximately undisturbed ) multiplied by a first weight (WXi) and a second sum component formed by multiplying the strength (Ypi) of the disturbed signal (Yi) by a second weight (WYi); forming (144) A denominator (Ni) comprising said numerator (Zi) as a first addend and the strength (SSpi) of an interfering signal (SSi) as a second addend; by dividing said numerator (Zi) by The quotient (Qi) formed from the denominator (Ni) is used to determine (146) the amplification factor (Qi). Furthermore, a device ( 10 ) is provided for carrying out the method ( 100 ) according to the invention.

Description

technical field [0001] The invention relates to a method and a device for determining the amplification factor of a hearing aid. The method comprises the steps of: determining the strength of an approximately undisturbed signal, determining the strength of an interfering signal, determining the strength of a disturbed signal and generating an amplification factor. The approximate non-disturbed signal and strength and / or the strength of the disturbing signal and / or the strength of the disturbed signal may be, for example, respectively a floating-point (gleitender) mean of the instantaneous power, a floating-point mean of the effective value, or other Floating-point average of the temporal variation of an amplitude value such as a sound pressure, voltage, or current signal. The floating-point mean value can be generated, for example, by sampling the voltage signal and subsequent filtering by means of a low-pass filter. The voltage signal can be, for example, a voltage signal g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R25/00H04R3/00
CPCH04R25/407H04R25/50H04R25/70H04R29/00
Inventor E.费希尔
Owner SIVANTOS PTE LTD