Re: MP3 more expensive than a CD?
By: tracker1 to Allen Prunty on Sun May 08 2016 08:28 pm
> > Actually MP3 is Lossy and the CD has full fidelity. MP3 removes sounds
> > from the inaudable sound spectrum.
>
> > The Lossless music files are .flac and .aiff and apple has there own too.
>
> CDs are lossy too, just less lossy than MP3 tends to be, depending on the
> encoding... There's also the mixing regarding "loudness wars" and associated
> distortion involved there.
By the normal definition of "lossy" versus "lossless" audio encoding, the
pulse-code-modulation (PCM) used on CD-Audio discs (and .WAV files) is
considered "lossless". There is no compression of the data whatsoever (e.g. 60
minutes of silence consumes exactly the same number of bits as 60 minutes of
music on a CD-A disc).
FLAC is a compressed lossless format, so 60 minutes of silence produces a much
smaller FLAC file than 60 minutes of minutes, but still, it's a lossless
compression.
MP3, AAC, and many other formats are "lossy" because they throw away audio data
(it gets "lost") in the encoding process. How much of the data is "lost" and
how important that data is to the fidelity of the audio depends on the encoding
scheme/processor, the target bitrate, etc.
WMA has both lossy and lossless schemes, but both are "compressed".
Dynamic audio compression/limiting is another thing entirely.
digital man
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