auto classification of sounds

[sm_jamieson]

I have not delved into audio processing yet - still messing with midi, etc.
I am trying to classify my sounds into genre to allow quick selection.
Would it be possible to produce a module that can analyse incoming sounds and classify them into
genre, such as brass, strings, piano, electric piano, etc.?
Simon.

[oli_lab]

quite a while ago I did some patches to listen to audio and classify it by spectral complexity, from pure to noise.

the way I done it was by doing an FFT, and get the number of different frequencies present in the audio file : the more bands of significant value mean something quite noisy...

but to recognise instruments, my guess would be that you need balaysian networks, have a system that can learn to recognize enveloppe shape in a fuzzy way...well quite a project !

[sm_jamieson]

It might be related to the methods used for speech recognition. I would thinking recognizing vowel sounds might be similar to recognizing the sound of a clarinet, flute or trumpet. A FFT to show frequency content on a graph would be a start.
Some stuff here:
http://hyperphysics.phy-astr.gsu.edu/hb ... imbre.html
And here:
http://amath.colorado.edu/pub/matlab/music/
OK, now this is good:
http://epubs.siam.org/doi/pdf/10.1137/S00361445003822

I won't put any more links in ...
Simon.

[oli_lab]

that a lot of thick reading indeed !
But could be fun to be able to classified sound in real time !