concept au python library

au.py

from coreaudio import Session
from ctypes import int16
from audiounit import Graph, Unit
from coremidi import MusicPlayer

graph = Graph({ "sample_rate": 44100, "channels": 2, "format": int16 })
mixer = Unit("Mixer")
graph.add(mixer)
sampler1 = Unit("AUSampler")
sampler2 = Unit("AUSampler")
lowpass = Unit("AULowpass")
mixer.connect(sampler1,0)
mixer.connect(lowpass,1)
lowpass.connect(sampler2)

player = MusicPlayer("test.mid")
player.tracks[0].assign_output(sampler1.node)
player.tracks[1].assign_output(sampler2.node)
player.tracks[1].map_cc(74,lowpass.q)

player.play()

graph.start()