Abstract: An imaging and measuring system of vocal cord vibration based on plane wave ultrasonography, includes: a digital ultrasonography system, a data acquisition unit, and a computer; wherein the digital ultrasonography system comprises an ultrasound linear array transducer and a host; wherein the ultrasound linear array transducer is controlled by the host for sending an ultrasound plane wave and receiving echo; the echo is sent back to data acquisition unit; wherein the data acquisition unit converts the echo into digital signal and then sends it to the computer; wherein the computer provides beamforming, envelope detection, and dynamic range compression of the digital signal received, for obtaining a laryngeal tissue structure image. The present invention provides high-speed imaging of the vocal cord vibration with temproal and spatial synchronization, and quantitatively extracting information of biomechanical parameters as well as vibrational phase changes.

Abstract: The invention provides an electrolaryngeal speech reconstruction method and a system thereof. Firstly, model parameters are extracted from the collected speech as a parameter library, then facial images of a speaker are acquired and then transmitted to an image analyzing and processing module to obtain the voice onset and offset times and the vowel classes, then a waveform of a voice source is synthesized by a voice source synthesis module, finally, the waveform of the above voice source is output by an electrolarynx vibration output module, wherein the voice source synthesis module firstly sets the model parameters of a glottal voice source so as to synthesize the waveform of the glottal voice source, and then a waveguide model is used to simulate sound transmission in a vocal tract and select shape parameters of the vocal tract according to the vowel classes.

Abstract: The invention provides an electrolaryngeal speech reconstruction method and a system thereof. Firstly, model parameters are extracted from the collected speech as a parameter library, then facial images of a speaker are acquired and then transmitted to an image analyzing and processing module to obtain the voice onset and offset times and the vowel classes, then a waveform of a voice source is synthesized by a voice source synthesis module, finally, the waveform of the above voice source is output by an electrolarynx vibration output module, wherein the voice source synthesis module firstly sets the model parameters of a glottal voice source so as to synthesize the waveform of the glottal voice source, and then a waveguide model is used to simulate sound transmission in a vocal tract and select shape parameters of the vocal tract according to the vowel classes.