35 results about "Vocal fold vibration" patented technology

It is possible to improve a defect of an analysis object itself of a mobile telephone and speech recognition which is an air propagating normal speech taken from outside by a microphone and realize a new mobile terminal communication based on the human cultural habit in the personal mobile information terminal without requiring training. A stethoscope type microphone is mounted on a human skin surface so as to take a meat-propagating vibration sound of un-hearable murmur articulated by a speech act (mouth movement) without using vocal cord regular vibration. The meat-propagating vibration sound of the amplified non-hearable murmur is like a whisper and the whisper itself can be heard and understood by a human. Accordingly, it can be used for communication via a mobile telephone. Moreover, by making the meat-propagating vibration sound of the un-hearable murmur an object of analysis / parameterization, it is possible to realize a kind of soundless recognition as a new input method of a personal mobile information terminal.

The invention relates to a method for separating sound of single channels on the basis of human sound models. The method includes steps of building the human sound models by the aid of source filters; providing input signals; constructing human sound power of the input signals by the aid of vocal cord vibration power models and filter models of vocal tracts and oral cavities; constructing background sound power of the input signals; reconstructing signal power spectra of the input signals according to the constructed human sound power and the constructed background sound power; solving human sound power and background sound power in the reconstructed signal power spectra and separating human sound signals and background sound signals from the input signals according to the solved human sound signals and the solved background sound signals. The built human sound models comprise the vocal cord vibration power models and the filter models of the vocal tracts and the oral cavities. The method for separating the sound of the single channels has the advantages that human sound can be separated from background sound by the aid of the method under extremely noisy conditions, and the method can be used in the fields of speech enhancement, human sound extraction and the like and is high in practicality.

The invention discloses a new speech synthesis method based on speech radar. The processing steps are as follows: the vocal cord vibration frequency is obtained from the radar echo signal as the speech fundamental frequency; the motion feature extracted from the lip video information and the microphone are synchronously obtained by the speaker when speaking. The formant extracted from the signal is fitted to obtain the empirical formula of the lip motion characteristics and the formant mapping relationship; the lip video of the tester is used as input to obtain the time-varying formant; finally, the obtained fundamental frequency and time-varying resonance Peak for speech synthesis. With the method of the invention, voice synthesis can be realized by combining voice radar and image information without contacting the speaker.