Re: artifact in spectrogram analysis

["Peter Shute" pshute2]

>David, I agree with most of your post, but and at the risk of being
>contentious, I have to challenge this:
>
>> Digital compression is a quite different techique. WAV format digital
>> compression compresses the digital version down to 16 or 24 bits. This
>> compression is inaudible and we tend to regard WAV as "uncompressed"
>> which it is not. Just so good that it is inaudible.
>
>To my understanding, 16 or 24 bit pulse code modulation (PCM), the
>standard formats for professional audio, do none of the things that data
>compression schemes do. Please explain what you meant.

I took this to mean that the signal is digitised at, say, 32 bits, then dow=
ngraded to 16 or 24 before being saved to memory. I wouldn't really call th=
at compression though.

Peter Shute