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Chinese voice signal process method for digital deaf-aid

A voice signal processing and voice signal technology, applied in hearing aids, voice analysis, instruments, etc., can solve the problem of difficulty in distinguishing changes in pitch, and achieve the effect of simple implementation, good hearing aid effect, and improved recognition rate.

Inactive Publication Date: 2005-03-23
南京国光医疗器械有限公司
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Problems solved by technology

Where syllables begin and end, pitch changes may be indistinguishable

Method used

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  • Chinese voice signal process method for digital deaf-aid

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Embodiment Construction

[0025] A Chinese speech processing method for a digital hearing aid, which uses a digital signal processor to process the characteristics of the Chinese speech signal, thereby improving the user's recognition rate of the Chinese speech.

[0026] The method of the invention is based on the processing of audio. The process includes time domain / frequency domain conversion processing, frequency domain signal feature extraction, vowel and consonant change statistics, spectral analysis gain processing, frequency domain / time domain conversion processing. See figure 1 .

[0027] The voice input from the audio receiving device is converted into a digital signal through A / D analog-to-digital conversion, and the obtained voice data stream is converted into the voice data stream required by the system through the time domain / frequency domain, and the voice data stream is decomposed into N frequency intervals, after the DFT modulation process, a single prototype filter is copied into 2N ...

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Abstract

The invention describes a Chinese speech sound signal processing used in the digital hearing aids and belongs to an speech sound signal processing. The invention aims to the feature of containing large amount of languages and semantic information in the tunes of the Chinese speech, treats the signal's feature of the speech data stream in according to several frequency parts through frequency analysis and outputs the digital signal after the D / A. the speech sound signal got from the invention can make the listeners hear the Chinese speech more clearly, increases the recognition rate of the Chinese speech and semantics and can improve the effect of the hearing aid.

Description

technical field [0001] The invention belongs to the speech processing technology of the digital hearing aid, which performs digital signal processing on the pronunciation characteristics of Chinese speech, and is suitable for the digital hearing aid based on the digital signal processing technology. Background technique [0002] Hearing aids, as the most important means of hearing rehabilitation, have been concerned by people who strive to improve their quality of life for nearly a hundred years. With the continuous development of science and technology, computer technology and digital signal processing are more and more applied to the field of hearing aids. At present, most of the new hearing aid products launched internationally are digital hearing aids based on digital signal processing technology. Since the design and manufacturers of digital hearing aids in the world are basically Western countries, various digital hearing aid signal processi...

Claims

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Application Information

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IPC IPC(8): H04R25/00
Inventor 蒋一宁夏世雄蒋涛付晓毅陈志刚
Owner 南京国光医疗器械有限公司
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