11 Nov
2008
11 Nov
'08
3:47 p.m.
On Tue, 11 Nov 2008 19:35:30 +0100
Fons Adriaensen <fons(a)kokkinizita.net> wrote:
On Mon, Nov 10, 2008 at 10:58:26PM +0000, Folderol
wrote:
I had a closer look. As posted before the difference is
noise, numerically generated (not analog) and strangely
lowpass filtered: -3dB at around 8 Khz going down to
-20dB at Fs/2.
The noise power is -81dB FS, which is at least 14 dB
higher than would be required for any form of dithering
of 16-bit PCM. At least 2.5 bits are lost. No idea what
Audacity is trying to do, but it looks quite wrong.
Ciao,
Thanks for going further into this. It's quite puzzling.
The thing is, where do we go from here? As I said in my previous post I
can confirm the ability to make identical copies directly, and via flac,
but I don't know how relevant the Audacity devs will think this issue
is.
--
Will J Godfrey
http://www.musically.me.uk