Difference between speech and music signal What are the difference between speech and music signal? Can anyone help? 

I am doing project in audio processing. In that project I want make decision, that is which type of signal is given as input whether it is speech signal or music signal. I searched a lot in internet. But i could not find the required details.

If anyone knows about this please share the difference between the speech and music signal.
Not really an answer, but usually when people speak there are pauses between words, sentences, thoughts, etc. Music (with multiple instruments) is fairly continuous. Even if one instruments stops another is probably still playing. So there would be less lulls in the audio stream. Just a guess though.

Another thing you could do is look at frequencies, voices are typically in the 300Hz-4kHz range (this is what telephones originally used as bandwidth) whereas musical instruments are usually much broader. A frequency outside the human range could indicate instruments  I randomly found that image here