made a simple rhythm sample mixer for fun (think Roland TR-909)

Irmen de Jong irmen.NOSPAM at
Sat Feb 13 10:29:52 EST 2016


For fun and to learn a bit from messing around a little with audio samples, I've created
a rhythm sample mixer inspired by the Roland TR-909 drum machine.

Basically you write rhythm sample patterns and it then sequences and mixes them into a
output wav file or streams it to your speakers. Songs are built up from pattern
sequences, where a pattern is built up from trigger bars for the used instruments.
The tool also has a simple command line interface to edit patterns and play samples etc.

As an example here is a fragment of one of the example songs;

patterns = pat1 pat2 pat3 pat2b pat3b outro

hihat2     = x...x... x...x...
kick7      = x....... ........
kick9      = ........ x.......
snare2     = ........ x.......

You can find it here (also some examples):

Python 3.x is required, also needs pyaudio if you want streaming. Other than that, I've
found that the standard age-old audioop module may be limited, but is enough to build
some basic sample mixing stuff with.
I'm interested in what rhythm loops you can come up with!

have fun,

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