Patent ID: 6044345
Filing Date: 2000-03-28
Classification: G10L

Abstract:
A method for coding human speech for subsequent reproduction thereof, said method comprising the steps of:receiving an amount of human-speech-expressive information;defining a transfer function of said speech and singling out therefrom all poles that are unrelated to any particular resonance of a human vocal tract model, while maintaining all other poles;defining a glottal pulse related sequence representing said singled out poles through an explicitation of the derivative of the glottal air flow;outputting speech represented by filter means based on combining said glottal pulse related sequence and a representation of a formant filter with a complex transfer function as expressing said all other poles,wherein said glottal pulse sequence is modelled through further explicitly expressible generation parameters,said method being characterized by supplementing a non-zero decaying return phase to the glottal-pulse response that is explicitized in all its parameters, whilst amending the overall response in accordance with volumetric continuity.