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@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
