On Mon, Nov 10, 2008 at 10:58:26PM +0000, Folderol wrote:
> OK, there are four files:
>
> http://www.musically.me.uk/music/Test1.wav
> http://www.musically.me.uk/music/Test2.wav
> http://www.musically.me.uk/music/Test3.wav
> http://www.musically.me.uk/music/Test4.wav
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,
-- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Lascia la spina, cogli la rosa. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@email-addr-hidden http://lists.linuxaudio.org/mailman/listinfo/linux-audio-userReceived on Wed Nov 12 00:15:02 2008
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