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A LSF Quantizer for the Wideband Speech Using the Predictive VQ-Pyramid VQ  

이강은 (한양대학교 전자전기제어계측공학과)
이인성 (한양대학교 전자전기제어계측공학)
강상원 (한양대학교 전자전기제어계측공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.4, 2004 , pp. 333-339 More about this Journal
Abstract
This Paper proposes the vector quantizer-pyramid vector quantizer(VQ-PVQ) structure. Also both predictive structure and safety-net concept are combined into the VQ-PVQ to quantize the IPC parameter of wideband speech codec. The Performance is compared to the LPC vector quantizer used in the AMR-WB(ITU-T G.722.2). demonstrating reduction in both spectral distortion and encoding memory.
Keywords
Vector quantization; Wideband speech codec; Linear prediction coding coefficient;
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