thanks everybody.. this goes by far beyond my capabilities, so i decided to turn
it around and create a sample-based patch.
the basic idea is to control a light installation through sound. 60 neon tubes are controlled
via a custom built max patch. i want to connect the brightness of these tubes to the  sound of breathing. my first thought was that it would be easier to deduct data from a
patch based on synthesis. after the information i gathered from the list i realize that this
is an immense task that has its focus only next to my intention. so i decided to create a
sample based patch. at the moment i am using [fiddle] to read the amplitude of the recorded breath sounds.. however there are some troubles, like its very, very jumpy..
it is also difficult to find a sonically equivalent parameter to "breath in.. breath out"..
pitch doesnt work.. [env] only reads the RMS so it does not change too much..
amplitude is close to what we hear as rising and falling, but still very far from the natural
perception.. maybe someone has an idea ? anyways.. i will keep you updated.. : )

alexandre d.


On 10/07/07, Thomas Grill < gr@grrrr.org> wrote:
And if you really want to go into details, beyond PD, you could try PRAAT.
http://www.fon.hum.uva.nl/praat/

greetings, Thomas

Andy Farnell schrieb:
> Breathing could be as easy as pushing a bit of
> rising and falling noise through some parallel
> bandpass filters.
>
> To model the human vocal tract, mouth and lungs, and
> the air pressure at all places inside is the tricky
> bit to make it sound convincing. Is it for singing
> or a synthesised instrument like flute?.. because for
> playing an instrument there is forced breathing where
> the lips are more closed and that needs a slightly
> different model. Open breathing is more related to
> singing synthesis, two deep sources to mine are this thesis
>
> http://www.cs.princeton.edu/~prc/SingingSynth.html
>
> and this one
>
> http://web.media.mit.edu/~moo/thesis/YEK_thesis.pdf
>
> What you probably are *not* interested in are
> fof, paf, vosim type methods, which are more
> for voiced sounds. One that would be good
> for breathing is vocoder (filter bank).
> If you have a good tract model it's gonna be good for
> breathing, replace the voiced oscillator with different
> kinds of noise. There's a pvoc example in the Pd help files.
> Take snapshots for "oooh" and "aah" formants and try those
> filters with noise. To make it efficient crossfading
> between a few fixed filters might be okay. I haven't researched
> it much further, but you'd suppose different forces are at
> work breathing in and out, so they will be different sounds
> with different noise/pressure curves.
>
>
> On Tue, 10 Jul 2007 01:13:40 +0200
> "alexandre r. decoupigny" <alex.decoupigny@gmail.com> wrote:
>
>
>> hello there...
>>
>> i want to build a patch that synthesizes
>> the sound of breathing.. i know some pd
>> and some synthesis.. any idea where and
>> how to start ?
>>
>> best
>>
>> alexandre
>> --
>> alexandre r. decoupigny
>>
>> www.listeningart.blogspot.com
>> www.myspace.com/alexandredecoupigny
>> Adore Apples. Love Green Apples.
>> http://www.greenpeace.org/apple/
>>
>>
>
>
>




--
alexandre r. decoupigny

www.listeningart.blogspot.com
www.myspace.com/alexandredecoupigny
Adore Apples. Love Green Apples.
http://www.greenpeace.org/apple/