Source-filter models for time-scale pitch-scale modification of speech

Author

Acero, Alex

Author_Institution

Microsoft Corp., Redmond, WA, USA

Volume

2

fYear

1998

fDate

12-15 May 1998

Firstpage

881

Abstract

This paper presents two time-scale pitch-scale modification techniques to be used in speech synthesis systems. They have been applied to Microsoft´s Whistler system, which is based on concatenative synthesis. Both methods are based on a source-filter model, one of them using LPC parameters and the other one using cepstral parameters. The proposed methods achieve high quality prosody modification, retain the characteristics of the donor speaker, allow for spectral manipulation (to reduce spectral discontinuities at unit boundaries), yield compact acoustic inventories and improved voiced fricatives

Keywords

FIR filters; feature extraction; filtering theory; linear predictive coding; parameter estimation; spectral analysis; speech coding; speech synthesis; FIR filter; LPC parameters; Microsoft´s Whistler system; cepstral parameters; compact acoustic inventories; concatenative synthesis; donor speaker characteristics; epoch extraction; high quality prosody modification; source-filter models; spectral discontinuities reduction; spectral manipulation; speech synthesis systems; time-scale pitch-scale modification; unit boundaries; voiced fricatives; Cepstral analysis; Filters; Linear predictive coding; Loudspeakers; Man machine systems; Pulse generation; Smoothing methods; Speech processing; Speech synthesis; Synthesizers;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on

Conference_Location

Seattle, WA

ISSN

1520-6149

Print_ISBN

0-7803-4428-6

Type

conf

DOI

10.1109/ICASSP.1998.675406

Filename

675406