Unequal Coefficients Interframe Predictive Split Vector Quantizer for Wideband ISF Parameters

LI Hai-ting; BAO Chang-chun

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Unequal Coefficients Interframe Predictive Split Vector Quantizer for Wideband ISF Parameters

更新时间：2025-07-16

- Unequal Coefficients Interframe Predictive Split Vector Quantizer for Wideband ISF Parameters
- Acta Electronica Sinica Vol. 36, Issue 6, Pages: 1214-1217(2008)
- 作者机构：
  
  北京工业大学电子信息与控制工程学院语音与音频信号处理研究室,北京,100124
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN912.3
- Published：2008
- 稿件说明：
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LI Hai-ting, BAO Chang-chun. Unequal Coefficients Interframe Predictive Split Vector Quantizer for Wideband ISF Parameters[J]. Acta Electronica Sinica, 2008, 36(6): 1214-1217.
DOI：

LI Hai-ting, BAO Chang-chun. Unequal Coefficients Interframe Predictive Split Vector Quantizer for Wideband ISF Parameters[J]. Acta Electronica Sinica, 2008, 36(6): 1214-1217. DOI：

摘要

本文提出了一种新的适用于宽带语音编码ISF参数量化的非等系数帧间预测分裂矢量量化方案.该量化方案利用ISF参数的帧间相关性

基于预测分裂矢量量化原理

首先对待量化的ISF参数矢量进行去均值和非等系数帧间预测

然后对去均值后的ISF参数的预测残差进行分裂矢量量化.实验表明

该算法在每帧编码比特数为46bits时达到了透明量化

且平均谱失真比G.722.2中ISF参数量化的平均谱失真小.

Abstract

An unequal coefficients interframe predictive split vector quantizer is proposed.This quantizer is used for quantizing the ISF (Immittance Spectral Frequencies) parameters of wideband speech.This quantizer is based on interframe correlation and split vector quantization.In this quantizer

the unequal coefficients interframe prediction is firstly applied on the mean-removed ISF parameters vector to be quantized

and then the ISF residual vector is quantized using split vector quantizer.Experimental results show that this quantization scheme achieves transparent coding at 46bits/frame

and the average spectral distortion is lower than that of AMR-WB (ITU-T-G.722.2) speech coding standard.

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LI Hai-ting

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Related Institution

School of Electronic Information and Control Engineering Beijing University of Technology

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Electronic Information and Control Engineering CollegeBeijing Polytechnic UniversityBeijing 100022China

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