In article .com,
Dave wrote:
I have been disappointed with the audio quality of some CDs I have
bought recently. Is there a free program I can use to get an accepted
measurement of fidelity? (like a signal to noise ratio)
I have my suspicious that some may have been stored an MP3s and then
"unripped" in the factory. So how can I tell for certain if my CD has
been an MP3, or other lossy format? I'd hope mp3 storage would leave
different markers than the original tape, for example.
To get a good measure I'd expect some Fourier transforms and signal
analysis to be done, so this should be relevant to sci.physics.
I'd be most surprised if any commercial CD used MP3 or any other lossy
format at any stage of its production. Indeed they mostly use a rather
higher sampling rate etc in production to allow easier signal processing -
eq and compression, etc. But non of that stops the end product sounding
crap if that's what the record company wants. And they frequently do.
--
*TEAMWORK...means never having to take all the blame yourself *
Dave Plowman
London SW
To e-mail, change noise into sound.