Title :
Low bit-rate spectral coding in CELP, a new LSP-method
Author :
Hagen, Roar ; Hedelin, Per
Author_Institution :
Dept. of Inf. Theor., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
The use of line spectral pair (LSP)-frequencies for approaching the performance of a full vector quantizer for speech coding is discussed. An algorithm is presented that attains close to optimal performance if an accumulative constraint is introduced in the parameter encoding. Numerical results are presented from the training of code-books as well as from the evaluation of the quantizer. Some listening tests are discussed
Keywords :
decoding; encoding; filtering and prediction theory; speech analysis and processing; CELP; LSP-method; accumulative constraint; code excited linear prediction; codebook training; line spectral pair; listening tests; low bit rate spectral coding; parameter encoding; quantiser evaluation; speech coding; Algorithm design and analysis; Bit rate; Distortion measurement; Encoding; Information theory; Linear predictive coding; Quantization; Robustness; Speech coding; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115570
