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Hearing aid-oriented adaptive multi-channel loudness compensation method and hearing aid chip

A technology for loudness compensation and hearing aids, applied in hearing aids, hearing aid signal processing, electrical components, etc., can solve problems such as low voice quality and signal distortion, and achieve the effect of improving voice quality

Active Publication Date: 2021-05-28
湖南芯海聆半导体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, WDRC technology makes the signal audible and also brings signal distortion. When the sound pressure level of the input signal is in a certain range, the voice quality of the signal after WDRC compensation is even lower than the result obtained by linear compensation.

Method used

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  • Hearing aid-oriented adaptive multi-channel loudness compensation method and hearing aid chip
  • Hearing aid-oriented adaptive multi-channel loudness compensation method and hearing aid chip
  • Hearing aid-oriented adaptive multi-channel loudness compensation method and hearing aid chip

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0057] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0058] In addition, in t...

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Abstract

The invention discloses a hearing aid-oriented adaptive multi-channel loudness compensation method and a hearing aid chip, and the method comprises the steps: obtaining an input signal, carrying out the AD conversion of the input signal, obtaining a digital signal, and carrying out the framing of the digital signal, and obtaining a voice signal; performing filtering transformation on the voice signals to obtain a plurality of channel signals, and dividing all the channel signals into a first channel combination and a second channel combination according to an audible range; performing piecewise linear gain on each channel signal in the first channel combination; performing nonlinear gain on each channel signal in the second channel combination; and synthesizing each channel signal in the first channel combination after gain compensation and each channel signal in the second channel combination after gain compensation to obtain a voice signal after gain compensation, and outputting the voice signal. Firstly, multi-channel decomposition is performed on a signal, then channels are divided into two groups, a channel combination with a smaller audible range is used for piecewise linear gain, and the other channel combination is used for nonlinear gain, so that the voice quality after gain compensation is effectively improved.

Description

technical field [0001] The invention relates to the technical field of speech signal processing, in particular to a hearing aid-oriented adaptive multi-channel loudness compensation method and a hearing aid chip. Background technique [0002] Hearing is one of the important senses of human beings, and it is an important part of communication and communication with the surroundings. Its importance is no less than that of vision. In recent years, due to global noise pollution and the aging of the world's population structure, the global population of hearing loss is increasing day by day. For centuries, scientists have been using various means to help hearing-impaired patients improve their hearing. Before there was a major medical breakthrough, wearing hearing aids was one of the most common ways to compensate for hearing loss. [0003] With the development of DSP technology, hearing aids developed from analog to digital in the 1990s, and the representative one is the expans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R25/00
CPCH04R25/505H04R2225/43
Inventor 熊志辉陈旺
Owner 湖南芯海聆半导体有限公司
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