Research on MBE Algorithm and Implemented in Realtime with Low Bit Rate

崔慧娟; 唐昆; 郑海生; 江灏

您当前的位置：

首页 >

文章列表页 >

Research on MBE Algorithm and Implemented in Realtime with Low Bit Rate

更新时间：2025-12-08

- Research on MBE Algorithm and Implemented in Realtime with Low Bit Rate
- Acta Electronica Sinica Issue 10, Pages: 129-132(1998)
- 作者机构：
  
  1. 清华大学电子工程系!北京
  2. 100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN912
- Published：1998
- 稿件说明：
移动端阅览
[1]崔慧娟,唐昆,郑海生,江灏.多带激励低速率语音压缩编码算法研究及实时实现[J].电子学报,1998(10):129-132.

崔慧娟, 唐昆, 郑海生, et al. Research on MBE Algorithm and Implemented in Realtime with Low Bit Rate[J]. Acta Electronica Sinica, 1998, (10): 129-132.
[1]崔慧娟,唐昆,郑海生,江灏.多带激励低速率语音压缩编码算法研究及实时实现[J].电子学报,1998(10):129-132. DOI：

崔慧娟, 唐昆, 郑海生, et al. Research on MBE Algorithm and Implemented in Realtime with Low Bit Rate[J]. Acta Electronica Sinica, 1998, (10): 129-132. DOI：

摘要

本文以多带激励声码器为模型，采用了多种技术去降低编码速率和改善音质.我们利用动态规划算法对基音周期进行平滑，去除了声码器中常有的音调噪声.MBE算法对谱包络的量化要花费大量的比特，这里利用LPC全极点模型谱逼近MBE谱包络，并采用共振峰增强技术来补偿模型误差.对谱幅度参数的量化，采用了分裂矢量量化（SPVQ）和多级矢量量化（MSVQ）的方法.使之在2.4kbps，1.2kbps及800bps等速率上，用单片ADSP2181实时实现了较高质量的语音压缩编解码.

Abstract

This paper presents a high quality variable-rate speech coding at 2.4kbps

1.2kbps and 800bps based on the algorithm of Multi-Band Excitation （MBE）. The techniques of smoothing pitch period using dynamic programming algorithm

LPC all-pole model to approximate the MBE spectral shape

formant enhancement

split vector quantizer （SPVQ）

multi-stage vector quantizer （MSVQ）

etc. Are adopted to improve this vocoder. It can be implemented in realtime using a single ADSP2181 fixed point DSP.The speech quality of the realtime systems reach the currrent international level. The synthesis speech is clear and intelligent

as well as intelligent being in the presence of background noise at 80dB.

关键词

Keywords

references

Views

171

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Power Spectrum Manifold-Based Information Geometry DP-TBD Algorithm

Methods for Optimal Eliminating Cycles in Information Flow of Authorization Policies

A Resource Selection Algorithm for Parallel Component Based on Dynamic Programming

A Novel Fast Stereo Algorithm for Vision Navigation

Channel Model Changes Detecting Method Based on DP-Algorithm

Related Author

WANG Hong-qiang

LI Xiang

YANG Zheng

CHENG Yong-qiang

WU Hao

GUO Li

YIN Li-hua

JIN Shu-yuan

Related Institution

College of Electronic Science and Technology， National University of Defense Technology

National Engineering Laboratory for Information Security TechnologiesBeijing 100190China

Institute of Computing Technology, Chinese Academy of Sciences

Institute of Electronic Technology,Information Engineering University

Graduate School of Chinese Academy of Sciences

⁰