On Sunday, 29 November 2015 at 12:40:30 UTC, Guillaume Piolat
wrote:
On Sunday, 29 November 2015 at 12:28:49 UTC, Ola Fosheim
Grøstad wrote:
The sound samples sound quite a bit like the classic vocal
sound of Infected Mushroom to my ears, which is cool.
Infected Mushroom released another plugin recently:
http://www.musicradar.com/news/tech/infected-mushroom-present-the-i-wish-granular-note-freezing-plugin-631043
Hmm, yes, that looks like a simple loop algorithm. One can do
interesting things with simple effects, like zero-crossing
slicing. Btw, I recently found out that an ex-colleague of me has
created a song with them called "Nerds on Mushrooms", IIRC he is
quite fond of the vintage game music soundscape.
I assume you are using a peak detector to get the consonants
through and granular synthesis to do the frequency shifting in
the time domain?
It's a pitch-tracking poly-Bode-shifter. The pitch tracking
part is secret(tm).
I remember the electro acoustic people here in Oslo (NoTAM) doing
live pitchtracking 20 years ago, I believe they used an envelope
follower of some sort. Just measuring the distance between the
tops? That was to have the "electronic accompaniment" follow the
lead of the vocalist I believe.
Maybe something like this for transients, or perhaps something
less involved?
http://recherche.ircam.fr/anasyn/roebel/paper/icmc2003.pdf
The phase vocoders of IRCAM are very impressive at work, they
have.
IRCAM has done a lot of interesting things. In the 90s they had
the IRCAM workstation which was a NeXT cube with lots of DSP card
so that you could run Max real time.
But it has different latency characteristics, overlapped FFT
easily goes into the 20/30 ms.
It depends on how low down in frequency you need to go, a female
voice is at 160 hz and up, and a child is at 250hz and up. In
that frequency range one could do better. And at the cost of
complexity you could use two FFTs, one for the lower range and
another for the higher range.
Or maybe one can use wavelets, but I don't know much about
wavelet transforms (they don't map to cosine, so imagine it will
be much harder to do well).
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