Title :
Improved interoperable 2.4 kb/s LPC using sinusoidal transform coder techniques
Author :
McAulay, Robert John ; Champion, Terrence
Author_Institution :
MIT, Lincoln Lab., Lexington, MA, USA
Abstract :
It is shown that it is possible to code the parameters of the sinusoidal transform coder (STC) according to Government Standard FS-1015. To accommodate the standard, the voicing probability was quantized to 1 b, and the selection of the voicing threshold was a major focus of the experimental work. Preliminary experiments with the various interoperability configurations have indicated a potential improvement in quality in the fully interoperable STC/STC and LPC/STC modes (C2, D2)
Keywords :
encoding; probability; speech synthesis; vocoders; 2.4 kbit/s; Government Standard FS-1015; LPC/STC modes; STC/STC mode; encoding; linear predictive code; sinusoidal transform coder; speech synthesis; voicing probability; voicing threshold; Code standards; Frequency estimation; Government; Harmonic analysis; Laboratories; Linear predictive coding; Pulse measurements; Speech analysis; Speech synthesis; US Government; Vocoders;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115818
