Title :
Speech representation and transformation using adaptive interpolation of weighted spectrum: vocoder revisited
Author :
Kawahara, Hideki
Author_Institution :
ATR Human Inf. Process. Res. Labs., Kyoto, Japan
Abstract :
A simple new procedure called STRAIGHT (speech transformation and representation using adaptive interpolation of weighted spectrum) has been developed. STRAIGHT uses pitch-adaptive spectral analysis combined with a surface reconstruction method in the time-frequency region, and an excitation source design based on phase manipulation. It preserves the bilinear surface in the time-frequency region and allows for over 600% manipulation of such speech parameters as pitch, vocal tract length, and speaking rate, without further degradation due to the parameter manipulation
Keywords :
adaptive signal processing; interpolation; parameter estimation; signal reconstruction; signal representation; spectral analysis; speech coding; speech processing; time-frequency analysis; vocoders; STRAIGHT; adaptive interpolation; excitation source design; parameter manipulation; phase manipulation; pitch; pitch adaptive spectral analysis; speaking rate; speech parameters; speech quality; speech representation; speech transformation; surface reconstruction method; time-frequency region; vocal tract length; vocoder; weighted spectrum; Amplitude modulation; Equations; Frequency domain analysis; Frequency modulation; Interpolation; Spectral analysis; Speech; Surface reconstruction; Time frequency analysis; Vocoders;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.596185
