DocumentCode :
310987
Title :
Articulatory speech synthesis using diphone units
Author :
Greenwood, Andrew R.
Author_Institution :
Sch. of Electr. Eng. Electron. & Phys., Liverpool John Moores Univ., UK
Volume :
3
fYear :
1997
fDate :
21-24 Apr 1997
Firstpage :
1635
Abstract :
Two different parametric models of the vocal tract have been developed. These have been used to obtain area functions for use in an articulatory synthesiser based on the Kelly-Lochbaum (1962) model. Random sampling of the geometric space spanned by the model has been performed to obtain a codebook for use in spectral copy synthesis. A dynamic programming search of this codebook produces intelligible synthetic speech, but the overall quality is limited by the density of codebook entries in articulatory space. To increase the coverage without significantly increasing the codebook size, a method of generating several small codebooks, each of which covers a small amount of acoustic space has been developed. By using codebooks which map the regions of acoustic space defined by voiced diphones, it has been possible to significantly improve the quality of the synthetic speech
Keywords :
acoustic signal processing; dynamic programming; search problems; signal sampling; speech coding; speech intelligibility; speech processing; speech synthesis; Kelly-Lochbaum model; acoustic space; area functions; articulatory space; articulatory speech synthesis; articulatory synthesiser; codebook; codebook size; coverage; diphone units; dynamic programming search; geometric space; intelligible synthetic speech; parametric models; random sampling; spectral copy synthesis; synthetic speech quality; vocal tract; voiced diphones; Impedance; Inductors; Loudspeakers; Magnetic resonance imaging; Natural languages; Parametric statistics; Resistors; Sampling methods; Shunt (electrical); Speech synthesis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
ISSN :
1520-6149
Print_ISBN :
0-8186-7919-0
Type :
conf
DOI :
10.1109/ICASSP.1997.598818
Filename :
598818
Link To Document :
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