On Mon, Oct 24, 2011 at 4:46 AM, Lorenzo Sutton <lsutton@xxxxxxxxx> wrote: > I wonder if anyone ever thought of/done (something like) this: > > - Paint something with your favourite graphics editor, export to bitmap > - Use a tool like ARSS [1] to resynthesise the bitmap only in a > near-to-inaudible fequency range (say 16000 ~ 22000 Hz) > - mix it with the original audio (so that the audio watermark is very low > but strong enough to be visible in a spectrogram) > http://www.controlgeek.net/blog/2010/12/1/spectrogram-birthday.html While they didn't use the inaudible spectrum, that was more because they didn't need to. Seablade _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
