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Why checksum uncompressed audio?
_mē_
post Oct 25 2009, 08:06
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FLAC and Wavpack (likely others too) use error detection codes for uncompressed audio data.
Why not for compressed?

I could find only 2 differences:
-you have to decompress the data to verify correctness, which (sometimes greatly) reduces verification performance
-you have more data to be checksumed, which slightly reduces compression / verification performance

What am I missing?
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_mē_
post Oct 26 2009, 17:17
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If it was disk bound, FLAC and WavPack would have roughly the same speed.
But WavPack was several times slower.
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rpp3po
post Oct 26 2009, 17:48
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Just checked an old comparison. Wavpack 4 really only does about 5 MB/s on an Athlon 800. That's quite lame. I wonder if its later asymmetrical modes could improve that considerably.
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