Can you create a file that is the 3rd, 4th, or 5th harmony to another file using Sox or ecasound? I've got a nice riff in the file riff.wav and I'd like to create some files that are in harmony to that file. So I'd have a file called riff_3.wav that would be in 3rd harmony to the riff.wav, and one called riff_4.wav that would be in 4th harmony, riff_5.wav, etc. Then I'd like to combine these files in various ways to create an output.wav. just to experiment and see what happens. Can you do this using Sox or ecasound? Could anyone tell me how, or where I could get some examples or more information on how to do this?
