Voice signal conversion system and voice signal processing method suitable for hearing aid

Abstract

According to the voice signal conversion system and the voice signal processing method suitable for the hearing aid, the structural design is simple and reasonable, the voice signal processing effect can be improved, and the wearing comfort is improved. The system comprises a voice acquisition module, an anti-aliasing filtering module, a programmable gain amplification module, an analog-to-digital conversion module with offset compensation, a digital audio signal processing module and a voice output module which are integrated on the hearing aid and connected in sequence. The voice signal processing method based on the voice signal conversion system comprises the steps of picking up continuous analog voice signals, removing high-frequency harmonic components in the analog voice signals, adjusting the dynamic range of the voice signals, obtaining adjusted voice signals, performing analog-to-digital conversion on the adjusted voice signals, obtaining digital voice signals, and performing hearing compensation processing and digital signal algorithm processing on the digital voice signal to obtain a discrete digital signal sequence, performing digital-to-analog conversion on the discrete digital signal sequence, and outputting an analog audio signal.

Description

technical field [0001] The invention relates to the technical field of speech processing, in particular to a speech signal conversion system and a speech signal processing method suitable for hearing aids. Background technique [0002] Hearing aids are special-purpose products that benefit the hearing-impaired. However, at present, the elderly or deaf patients are more resistant to the existing hearing aids on the market. After investigation and research, it is found that mid-to-high-end and high-end hearing aids with better effects on the market The price is relatively expensive, which exceeds the psychological expectations of most elderly people and hearing-impaired patients. Therefore, most elderly people or deaf patients are exposed to relatively cheap mid-to-low-end hearing aids, but such hearing aids have complex chip structures and algorithms. Problems such as poor speech signal processing effect, the existing hearing aids are equipped with more electronic components,...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem in the prior art that the offset generated by the A / D converter coding of the hearing aid makes the speech signal processing effect poor, the present invention provides a speech signal conversion system and a speech signal processing method suitable for the hearing aid, and its structural design Simple and reasonable, can improve the effect of voice signal processing and improve wearing comfort

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