Speex: A Free Codec For Free Speech

Speex: A Free Codec For Free Speech
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Speex:自由语音的免费编解码器

DOI:
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发表时间:
2016
期刊:
arXiv.org
影响因子:
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通讯作者:
J. Valin
J. Valin
中科院分区:
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文献类型:
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作者:
J. Valin

文献摘要

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Speex项目已于2002年启动,以满足对免费的,开源的语音编解码器的需求。 Speex基于代码激发线性预测(CELP)算法,与先前现有的Vorbis编解码器不同,它已通过不可靠的数据包网络来优化用于传输低延迟通信的语音。本文概述了Speex,其中涉及的技术以及如何在应用程序中使用。还解决了Speex中最新的发展,例如定点端口,声学回声取消和抑制噪声。
The Speex project has been started in 2002 to address the need for a free, open-source speech codec. Speex is based on the Code Excited Linear Prediction (CELP) algorithm and, unlike the previously existing Vorbis codec, is optimised for transmitting speech for low latency communication over an unreliable packet network. This paper presents an overview of Speex, the technology involved in it and how it can be used in applications. The most recent developments in Speex, such as the fixed-point port, acoustic echo cancellation and noise suppression are also addressed.