ETRI Journal
- Volume 30 Issue 5
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- Pages.738-740
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- 2008
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- 1225-6463(pISSN)
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- 2233-7326(eISSN)
Block Constrained Trellis Coded Vector Quantization of LSF Parameters for Wideband Speech Codecs
- Park, Jung-Eun (School of Electrical Engineering and Computer Science, Hanyang University) ;
- Kang, Sang-Won (School of Electrical Engineering and Computer Science, Hanyang University)
- Received : 2008.05.01
- Accepted : 2008.08.20
- Published : 2008.10.31
Abstract
In this paper, block constrained trellis coded vector quantization (BC-TCVQ) is presented for quantizing the line spectrum frequency parameters of the wideband speech codec. Both a predictive structure and a safety-net concept are combined into BC-TCVQ to develop the predictive BC-TCVQ. The performance of this quantization is compared with that of the linear predictive coding vector quantizer used in the AMRWB codec, demonstrating reductions in spectral distortion.