DESIGN AND DESCRIPTION OF A 600 BPS SPEECH CODER BASED ON MELPE

摘要：

This paper describes a 600 bps speech coder basedon the enhanced mixed excitation linear prediction model 1(MELPe). The algorithm of this speech coder includes features of MELPe, which can obtain high quality synthesized speech and is robust in difficult background noise environments. To reduce the bit rate, we have developed a modified multi-frame joint vector quantization that takes advantage of inherent inter-frame redundancy.The predicted multi-stage vector quantizer (PMSVQ) is designed to quantize the line spectrum frequency (LSF)parameters. Simulation results have proven that an efficient and high quality coding has been achieved at bit rate 600 bps, and the proposed coder is better than the existing 2400 bps LPC10e standard 2.

作者: Feng Zou Ying Guo Xinfu Chen Yan Liu

作者单位: Telecommunication Engineering College, Air Force Engineering University, Xian, Shaanxi 710077, China

会议类型: 国际会议

会议名称: 2006年IEEE信息理论国际会议(Proceedings of 2006 IEEE Information Theory Workshop ITW06)

会议地点: 成都

会议语种:英文

页码: 356-359

在线出版日期: 2006-10-22（万方平台首次上网日期，不代表论文的发表时间）