I am going to make a program related to audio signal processing . Are there any open source projects related to it?
The greatest curated organized repository of open source Wolfram Language programs for many specific subjects are Demonstrations, for example, related to your request fields:
Take also a look in the library:
--- there are are other related pages. also And also at the so called guid pages in docs:
--- at the top of the page there you see examples:
--- there are are other related pages. Also search for Mathematica at
And also so called new-in examples in V9 when SP got revamped:
And of course here. And maybe you should not shy away from SystemModeler: