https://hacks.mozilla.org/2012/07/firefox-beta-15-supports-the-new-opus-audio-format/
简单看了下，这玩意就是Skype的 SILK 和XVID 的 CELT 技术的混合体。这玩意对人声、语音、音乐都有恨强的优化，同等码率下可以直接秒杀mp3/aac/Vorbis/SpeeX。真是碉堡了。
技术特性：
Bit-rates from 6 kb/s to 510 kb/s
Sampling rates from 8 to 48 kHz
Frame sizes from 2.5 ms to 60 ms
Support for both constant bit-rate (CBR) and variable bit-rate (VBR)
Audio bandwidth from narrowband to full-band
Support for speech and music
Support for mono and stereo
Support for up to 255 channels (multistream frames)
Dynamically adjustable bitrate, audio bandwidth, and frame size
Good loss robustness and packet loss concealment (PLC)
Floating point and fixed-point implementation
官网：http://www.opus-codec.org/
简单看了下，这玩意就是Skype的 SILK 和XVID 的 CELT 技术的混合体。这玩意对人声、语音、音乐都有恨强的优化，同等码率下可以直接秒杀mp3/aac/Vorbis/SpeeX。真是碉堡了。
技术特性：
Bit-rates from 6 kb/s to 510 kb/s
Sampling rates from 8 to 48 kHz
Frame sizes from 2.5 ms to 60 ms
Support for both constant bit-rate (CBR) and variable bit-rate (VBR)
Audio bandwidth from narrowband to full-band
Support for speech and music
Support for mono and stereo
Support for up to 255 channels (multistream frames)
Dynamically adjustable bitrate, audio bandwidth, and frame size
Good loss robustness and packet loss concealment (PLC)
Floating point and fixed-point implementation
官网：http://www.opus-codec.org/
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