Open AccessBlock Constrained Trellis Coded Vector Quantization of LSF Parameters for Wideband Speech Codecs
Author(s) -
Park Jungeun,
Kang Sangwon
Publication year - 2008
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.08.0208.0129
Subject(s) - codec , vector quantization , wideband audio , speech coding , quantization (signal processing) , wideband , trellis quantization , adaptive multi rate audio codec , computer science , speech recognition , algorithm , code excited linear prediction , linear predictive coding , vector sum excited linear prediction , mathematics , electronic engineering , speech processing , artificial intelligence , telecommunications , voice activity detection , engineering , image compression , digital audio , image processing , image (mathematics) , audio signal
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 AMR‐WB codec, demonstrating reductions in spectral distortion.