DocumentCode
2909044
Title
A 450 b.p.s. vocoder with natural-sounding speech
Author
Cheng, Yan Ming ; Shaug, Douglas O.
Author_Institution
INRS-Telecommun., Verdun, Que., Canada
fYear
1990
fDate
3-6 Apr 1990
Firstpage
649
Abstract
An ARX model with glottal excitation is used to achieve an accurate and economical frequency compression of speech, and a short-term temporal decomposition is used to do temporal compression. Quantization properties of the new set of coefficients and of the side information are studied through vector quantization. Moreover, use is made of the sequential structure of the vectors produced by a short-term temporal decomposition to decrease further the coding bit rate. As an application of the above techniques, a 450-b/s vocoder with a 200-ms delay is described
Keywords
analogue-digital conversion; encoding; speech synthesis; vocoders; 450 bit/s; ARX model; coding; frequency compression; speech synthesis; temporal compression; temporal decomposition; vector quantization; vocoder; Bit rate; Delay; Filters; Frequency; Integrated circuit modeling; Predictive models; Signal processing; Speech; Speech coding; Speech enhancement; Speech processing; Vector quantization; Vocoders; White noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location
Albuquerque, NM
ISSN
1520-6149
Type
conf
DOI
10.1109/ICASSP.1990.115824
Filename
115824
Link To Document