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Method for realizing hearing change feedback using digital technology

A technology of digital technology and processing method, which is applied in the field of digital technology processing of stuttering correctors, stuttering correction or auxiliary therapy, and can solve problems such as unsatisfactory delay time, no vocalization of the first word, delay time limit, etc., and achieve precise control of stuttering Effects of adjuvant therapy, rapid remodeling, and low component count

Active Publication Date: 2008-05-28
MICRO DSP TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the delay time is limited by the read and write cycle of the memory, and it cannot meet the short and precise delay time requirements of DAF research in recent years.
Especially ineffective for those prone to silent stuttering behavior and difficulty in vocalizing the first word

Method used

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  • Method for realizing hearing change feedback using digital technology
  • Method for realizing hearing change feedback using digital technology
  • Method for realizing hearing change feedback using digital technology

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Experimental program
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Embodiment Construction

[0029] Such as figure 1 Shown: the signal flow of the present invention is divided into following stages:

[0030] Input signal: A sensor such as a microphone converts an analog signal into a level signal, and an analog / digital converter (A / D) converts the level signal into a digital signal, that is, a noisy voice signal, and then uses Fourier transform, time / frequency domain The converter transforms the digital signal from a time-domain signal to a frequency-domain signal;

[0031] Signal identification and optimization: perform algorithm noise reduction on the converted frequency domain signal, calculate the signal / noise ratio factor of each band of the frequency domain signal, and determine the attenuation of the mixed noise signal and the gain of the voice signal in each frequency band, attenuation The noise signal of each frequency band is boosted by the voice signal of each frequency band.

[0032] Signal reconstruction: the frequency domain signal is subjected to audi...

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Abstract

The invention discloses an acoustic feedback changing realization method of digital technique, which comprises the following steps: transmitting one's own language signal into level signal through sensor; transmitting the level signal into digital signal through A-to-D; dividing the digital signal into frequency domain signal through Fuliye transformation; delaying the frequency domain; changing the frequency; recombining the time domain data through Fuliye transformation; outputting with the sheltering signal compositely according to certain condition; transmitting the output digital signal into level signal through D-to-A transformation; transmitting into the acoustic signal for user. The invention displays obvious effect, which is fit for wide domain.

Description

technical field [0001] The invention relates to a voice signal processing method, specifically a digital technology processing method for a stuttering corrector, suitable for stuttering correction or auxiliary treatment. Background technique [0002] Altered auditory feedback (hereinafter referred to as AAF) refers to the way a speaker hears his own altered voice, and it is a speech feedback method that utilizes auditory senses. AAF may have three modes: delayed auditory feedback (Delayed Auditory Feedback, hereinafter referred to as DAF), frequency altered feedback (Frequency Altered Feedback, hereinafter referred to as FAF), and masking auditory feedback (masking auditory feedback, hereinafter referred to as MAF). Stuttering patients use auditory feedback to speak, which can improve the fluency of the speaker and reduce the symptoms of stuttering. DAF and FAF are ideal methods of stuttering correction equipment, and MAF is also useful for some patients with stuttering, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F5/58
Inventor 蒋一宁夏世雄蒋涛付晓毅蔺君刚
Owner MICRO DSP TECH