Title :
A new glottal LPC method for voice coding and inverse filtering
Author :
Alku, Paavo ; Laine, Unto K.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A linear-predictive-coding (LPC) based method for computing glottal pulses is presented. The method is based on modeling the speech production mechanism with three digital filters. The glottal contribution to the speech spectrum is first estimated with two consecutive LPC analyses. After the effect of the glottals are eliminated the vocal tract and radiation effects are modeled. Glottal waves close to the natural shape can be achieved with this straightforward method. Applications to speech coding are briefly described
Keywords :
encoding; speech analysis and processing; computing glottal pulses; glottal LPC method; glottal contribution; inverse filtering; linear-predictive-coding; low bit rate; radiation effects; speech coding; speech production mechanism; speech spectrum; vocal tract; voice coding; Digital filters; Filtering; Frequency; Linear predictive coding; Predictive models; Radiation effects; Signal analysis; Speech analysis; Speech coding; Speech processing;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100723
