Title :
New algorithm for spectral smoothing and envelope modification for LP-PSOLA synthesis
Author :
De los Galanes, F. M Giménez ; Savoji, M.H. ; Pardo, J.M.
Author_Institution :
Dept. Ingenieria Electron., Univ. Politecnica de Madrid, Spain
Abstract :
The final quality of a concatenation synthesis system is directly related to the continuity of the spectrum at the concatenation point. Due to the subjective auditory masking, if we minimize the spectral distortion in the formant frequencies, the quality will increase significantly. We present, along with results concerning pitch marking, an algorithm capable of modifying the LPC envelope in a flexible way which is the heart of a spectral smoothing module for a diphone-based linear prediction pitch-synchronous overlap-add (LP-PSOLA) concatenation system
Keywords :
linear predictive coding; smoothing methods; spectral analysis; speech coding; speech synthesis; LP-PSOLA; LP-PSOLA synthesis; LPC envelope; concatenation synthesis system; envelope modification; formant frequencies; pitch marking; spectral distortion; spectral smoothing; subjective auditory masking; text to speech system; Distortion; Filtering; Frequency measurement; Heart; Linear predictive coding; Signal processing; Signal synthesis; Smoothing methods; Speech synthesis; Time measurement;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389229
