Actually the condition in this project is , not to use pc.... means we can use lcd to display message. n i dont have idea to program it.. i have to take information about how to recognize the voice usign dsp .....!
My suggestion is getting your algorithms working on a PC platform (no hardware to build) then seeing if you can port them to a much smaller microcontroller design. If you can't get it working on a PC then you'll never get it running on a microcontoller. Also which microcontroller do you have the tools to work with?