Speech Recognition: Learn Digital Signal Processing

[CylonMath]

Hello , I want to do a small Speech Recognition Software for my pc , to allow me use my voice to start some programs and execute some commands on shell ( I know there are others but i want to do in on the educational side)

What subjects i should learn first ? I haven't taken Digital Signal Processing courses yet, however i have knowledge in Fourier series and transforms. What should i know to process sound data ?

Can you describe briefly , thanks !

 

[harborsparrow]

For a good overview of the difficulties, please see http://en.citizendium.org/wiki/Speech_recognition

 

[CylonMath]

Thank you , that explains briefly.

 

[technutz]

As an FYI Dragon Natural Speaking is favored by the Doc and Attorneys I support. It is a big resource hog so a beefy PC is recommended.

http://www.nuance.com/naturallyspeaking/

I use Mac Speech on the OS X as well. It is impressive. It is built upon Dragon's engine.
http://www.macspeech.com/

I know you wanted to write something, but these might save you some time.