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Does mp3 convert to WAV losslessly?, Title is the question
Gainless
post Mar 28 2012, 20:38
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I just wondered if this the case, because actually the Mp3 format is using a lot of of overdrives which is not possible in a WAV file. So if I e.g. make an audio CD with some Mp3's, will they remain exactly the same or will they differ from what an audio player would decode?
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stephan_g
post Apr 5 2012, 16:56
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I think what the OP wanted to know was: If the MP3 decodes to something with higher-than-fullscale peak amplitudes, what happens?

Answer: If you decode straight into 16-bit PCM, anything beyond fullscale gets clipped.

If you want to avoid that, you'll need a decoder with the necessary headroom and some additional processing to reduce levels before converting into 16-bit PCM (with dithering, yadda yadda) - exactly like a "proper" playback chain. How you achieve that is up to you. I might use Foobar2000's converter with Replaygain mode set to either "prevent clipping" or "apply gain, prevent clipping", assuming the files in question are RG scanned.

This post has been edited by stephan_g: Apr 5 2012, 16:58
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