Patent ID: 8650027
Filing Date: 2014-02-11
Classification: G06K,G10L

Abstract:
1. An electronic larynx speech reconstruction method, comprising the following steps: model parameters are extracted from a collected speech as a parameter base; face images of a sounder are acquired and transmitted to an image analyzing and processing module, sounding start and stop times and vowel classes are obtained after the image analyzing and processing model analyzes and processes the images; sounding start and stop times and the vowel classes are used to control a voice source synthesis module to synthesize a waveform of a voice source; the waveform of the voice source is output by an electronic larynx vibration output module, wherein the electronic larynx vibration output module comprises a front end circuit and an electronic larynx vibrator; and wherein the synthesis steps of the voice source synthesis module are as follows: 1) synthesize the waveform of a glottis voice source, which comprises select the model parameters of the glottis voice source from the parameter base according to the individualized sounding features of the sounder, wherein the sounding start and stop times control the starting and the stopping of the synthesis of the voice source, and the synthesis of the glottis voice source adopts a Liljencrants-Fant model with the math formulas as follows: in the formulas, Ee is the amplitude parameter, t 2) select shape parameters of a sound track according to the vowel classes, simulate sound transmission in the sound track by using a waveguide model, and calculate the waveform of the voice source according the following formulas: wherein the sound track is expressed by the cascading of a plurality of sound tubes with uniform sectional areas; in the above formulas, A