Title :
Quantization issues in harmonic coders [speech coding]
Author :
Trancoso, Isabel M. ; Rodrigues, Joaquim S. ; Almeida, Luis E. ; Marques, Jorge S. ; Serralheiro, A. ; Santos, Diana ; Tribolet, J.M.
Author_Institution :
INESC, Lisbon, Portugal
Abstract :
The introduction of vector quantization in the harmonic coder framework can affect several sets of parameters, namely the amplitudes and the phases of the harmonic coefficients. A systematic experimental study is reported in which this type of quantization is compared with traditional scalar techniques for quantizing the harmonic parameters. The experiments showed that it is possible to quantize voice speech below 8 kb/s and still obtain high-quality synthetic signals
Keywords :
encoding; speech analysis and processing; speech synthesis; 6 to 8 kbit/s; harmonic coder; high-quality synthetic signals; scalar techniques; speech coding; speech synthesis; vector quantization; voice speech; Amplitude estimation; Bit rate; Frequency estimation; Harmonic analysis; Phase estimation; Signal synthesis; Speech analysis; Speech coding; Speech synthesis; Vector quantization;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196597
