Voice Quality Characterization of IETF Opus Codec
Voice Quality Characterization of IETF Opus Codec
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IETF Opus 编解码器的语音质量表征
DOI：
10.21437/interspeech.2011-650
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Toukomaa
中科院分区：
文献类型：
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作者：
Anssi Rämö;H. Toukomaa
本文讨论了IETF驱动的开源语音和音频编解码器Opus的语音质量。Opus是一种基于SILK和CELT编解码技术的新开发的混合编解码器。本文简要介绍了Opus的结构，更重要的是根据听力测试结果找出了其最佳工作点。语音质量进行了评估，两个主观听力测试。行业标准语音编解码器：3GPP AMR和AMR-WB以及ITU-T G.718B、G.722.1C和G.719以及直接信号被用作语音质量参考。
This paper discusses the voice quality of Opus, IETF driven open source voice and audio codec. Opus is a newly developed hybrid codec based on SILK and CELT codec technologies. Opus construction is described shortly in this paper and more importantly its optimal operating points are found out based on the listening test results. Voice quality was evaluated with two subjective listening tests. Industry standard voice codecs: 3GPP AMR and AMR-WB, and ITU-T G.718B, G.722.1C and G.719 as well as direct signals were used as voice quality references.