24 Oct
2011
24 Oct
'11
1:35 p.m.
On Mon, Oct 24, 2011 at 4:46 AM, Lorenzo Sutton <lsutton(a)libero.it> 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