[microsound] audio analysis tools in max msp

[Mark Pedersen]

hey eske,

you can do a lot with Tristan Jehan's analyzer~ object - which is based in
part on Miller Puckette's fiddle~  object

it is not stereo, and it won't find a "sound-object" for you - but if you
spend some time analysing a field recording and isolate the unique features
of a sound - e.g. by looking beyond frequency filters to spectral features
like noisiness, brightness and envelope features, you could then run two
analyzer~ objects - one each for L & R - and then try to filter out whatever
is not matching your target parameters and  then measure the loudness in
each channel.  this is just a guess, and I'm sure there's much more
knowledgeable folks who actually know what they're talking about.

You may also want to look at IRCAM's gesture follower example patches that
come as part of the free FTM package. Once example shows how to recognise
voices using a Hidden Markov Model trained on MFCC's extracted from the
sound samples. You could do the same thing to have a realtime system that
can recognise the presence of a particular sound object.  There's probably a
fair bit of work to do in selecting audio features and training such a
system.

So, I reckon it's possible, but we're probably still waiting for someone to
right [cocktailpartyeffect~] :-)

regards,

Mark


On Wed, May 4, 2011 at 6:23 PM, eske nørholm <flemminglyst at gmail.com> wrote:

> hi microsounders,
>
> i'm interested in finding realtime audio analysis tools for realtime
> soundscape/soundwalk processing with max msp.
>
> how can we make maxmsp know where in a stereo field a "soundobject" comes
> from? how can we separate one "sound-object" from
> the noise, without it being to rude(simple highpass, lowpass filtering)?
>
> is there a [cocktailpartyeffect~] object or something alike out there...?
>
> realtime seems to be the key issue (in my mind)?
>
> any ideas, links, etc are very welcome!
>
> cheers,
> eske
>
> worgw.org
>
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