Scalable Multi-Rate iLBC

被引：0

作者：

Seto, Koji ^{[1
]}

Ogunfunmi, Tokunbo ^{[1
]}

机构：

[1] Santa Clara Univ, Dept Elect Engn, Santa Clara, CA 95053 USA

来源：

2012 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 2012) | 2012年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Rate flexibility and high robustness to packet loss are the essential features of speech codec for voice communications over Internet Protocol (IP) networks. Multi-rate internet Low Bit-rate Codec (iLBC) is one of the speech codecs that possesses both properties and was presented by our previous papers. However the speech quality is limited in clean channel conditions because of the limitations of the current frameindependent coding scheme in time domain. In this paper, the benefits of scalable structure constructed by the addition of enhancement layer to the core layer of multi-rate iLBC are presented. The experimental simulation results show that the proposed framework can improve speech quality especially at high bit rates.

引用

页码：1034 / 1037

页数：4

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