Speech coding using trellis-searched APC

Speech coding using trellis-searched APC

The design of a speech coding system that uses trellis-coded vector quantization (TCVQ) and adaptive predictive coding (APC) is formulated. A method for optimizing the TCVQ codebooks is presented. Simulation results are given for encoding rates of 16 and 9.6 kb/s for a variety of coder parameters. A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Malone, K.T., Fischer, T.R.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Autocorrelation
Bit rate
Constellation diagram
Encoding
Laboratories
Predictive coding
Signal design
Source coding
Speech coding
Vector quantization
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Zusammenfassung:The design of a speech coding system that uses trellis-coded vector quantization (TCVQ) and adaptive predictive coding (APC) is formulated. A method for optimizing the TCVQ codebooks is presented. Simulation results are given for encoding rates of 16 and 9.6 kb/s for a variety of coder parameters. At an encoding rate of 16 kb/s, informal listening tests found very little difference between the original sentences and the reconstructions. The 9.6 kb/s reconstructions were found to be natural sounding and of good quality.< >
DOI:10.1109/GLOCOM.1990.116644