On Sep 22, 2011, at 2:19 PM, Lorenzo Sutton wrote:
On 09/22/2011 07:15 PM, Hans-Christoph Steiner wrote:
On Sep 22, 2011, at 5:29 AM, Lorenzo Sutton wrote:
On 21/09/2011 22:44, Hans-Christoph Steiner wrote:
I'm trying to come up with a simple voice scrambling technique that
leaves voices understandable, but makes them unrecognizable. A
key part
of this is to make it very hard to reverse the scrambling to make
the
voice more recognizable.
Ineresting. Also these possible approaches come to mind:
- Trivial, probably off-topic: use a TTS. Only thing that is
recognisable is the software which produced it.
- Use some sort of granulation with random pitch-shifting. Not sure
how easily reversible this would be.
A fun thing might be mix the two: that is start from a TTS and then
feed it into the granular... Here a silly example made with Festival
TTS and granulation in Granita (the first sentence is the 'original'
produced by Fesival) with different settings and degrees of
recognisability:
http://lorenzosu.altervista.org/temp/dump/voice01.ogg
That sound has a lot of nice examples, can you share the patch for
that?
I was using my own Granita [1] which also has a "play" gadget.
text-to-speech is interesting, but that requires speech-to-text,
which
is error prone and not something you can easily run in realtime on a
phone while processing video. Granular can be heavy too,
True, I hadn't thought you were on resources budget, but indeed you
had mentioned CPU usage, Granita for ex.. is quite hungry, although
you can lower it's demands (see README). I don't think it would run
on a phone.. never tried though.
Lorenzo.
[1] http://lorenzosu.altervista.org/pd/granita/\
Granita looks quite nice and polished. You should add it to the
puredata.info downloads as an app. Here's how:
http://puredata.info/docs/sitedocs/AddingYourProjectToDownloads
.hc
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