文件名称:05-music-coding
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- 2012-11-26
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- vidhy*****
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Music Coding
LPC-based codecs model the sound source to achieve good
compression.
Works well for voice.
Terrible for music.
What if you can’t model the source?
Model the limitations of the human ear.
Not all sounds in the sampled audio can actually be heard.
Analyze the audio and send only the sounds that can be heard.
Quantize more coarsely where noise will be less audible.-Music Coding
LPC-based codecs model the sound source to achieve good
compression.
Works well for voice.
Terrible for music.
What if you can’t model the source?
Model the limitations of the human ear.
Not all sounds in the sampled audio can actually be heard.
Analyze the audio and send only the sounds that can be heard.
Quantize more coarsely where noise will be less audible.
LPC-based codecs model the sound source to achieve good
compression.
Works well for voice.
Terrible for music.
What if you can’t model the source?
Model the limitations of the human ear.
Not all sounds in the sampled audio can actually be heard.
Analyze the audio and send only the sounds that can be heard.
Quantize more coarsely where noise will be less audible.-Music Coding
LPC-based codecs model the sound source to achieve good
compression.
Works well for voice.
Terrible for music.
What if you can’t model the source?
Model the limitations of the human ear.
Not all sounds in the sampled audio can actually be heard.
Analyze the audio and send only the sounds that can be heard.
Quantize more coarsely where noise will be less audible.
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05-music-coding.pdf