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Josh Coalson 2003-11-30 00:23:20 +00:00
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<B>Lossless</B>: The encoding of audi (PCM) data incurs no loss of information, and the decoded audio is bit-for-bit identical to what went into the encoder. Each frame contains a 16-bit CRC of the frame data for detecting transmission errors. The integrity of the audio data is further insured by storing an <A HREF="http://userpages.umbc.edu/~mabzug1/cs/md5/md5.html">MD5 signature</A> of the original unencoded audio data in the file header, which can be compared against later during decoding or testing.
<B>Lossless</B>: The encoding of audio (PCM) data incurs no loss of information, and the decoded audio is bit-for-bit identical to what went into the encoder. Each frame contains a 16-bit CRC of the frame data for detecting transmission errors. The integrity of the audio data is further insured by storing an <A HREF="http://userpages.umbc.edu/~mabzug1/cs/md5/md5.html">MD5 signature</A> of the original unencoded audio data in the file header, which can be compared against later during decoding or testing.
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<B>Fast</B>: FLAC is asymmetric in favor of decode speed. Decoding requires only integer arithmetic, and is much less compute-intensive than for most perceptual codecs. Real-time decode performance is easily achievable on even modest hardware.