def chords():
synth = WaveSynth()
with Output(nchannels=1, mixing="sequential", queue_size=1) as out:
for rootnote in octave_notes:
chord_keys = major_chord_keys(rootnote, 4)
print("chord", rootnote, ["{0} {1}".format(note, octave) for note, octave in chord_keys])
freqs = [notes[octave][key] for key, octave in chord_keys]
for i in range(1, len(freqs)):
assert freqs[i] > freqs[i-1]
samples = [synth.sine(freq, 1.5, amplitude=0.333) for freq in freqs]
s = samples[0].mix(samples[1]).mix(samples[2]).fadein(0.1).fadeout(0.1)
out.play_sample(s)
out.wait_all_played()
def pressed(self, note, octave, released=False):
if self.arp_filter_gui.input_mode.get().startswith("arp"):
if released:
if self.arp_after_id:
self.after_cancel(self.arp_after_id) # stop the arp cycle
self.statusbar["text"] = "ok"
self.arp_after_id = 0
return
chord_keys = major_chord_keys(note, octave)
if self.arp_filter_gui.input_mode.get() == "arpeggio3":
chord_keys = list(chord_keys)[:-1]
self.statusbar["text"] = "arpeggio: "+" ".join(note for note, octave in chord_keys)
self.play_note(chord_keys)
else:
self.statusbar["text"] = "ok"
self.play_note([(note, octave)], released)
def create_chord_osc(clazz, **arguments):
if is_audio and self.arp_filter_gui.input_mode.get().startswith("chords"):
chord_keys = major_chord_keys(note, octave)
if self.arp_filter_gui.input_mode.get() == "chords3":
chord_keys = list(chord_keys)[:-1]
a4freq = self.a4_choice.get()
chord_freqs = [note_freq(n, o, a4freq) for n, o in chord_keys]
self.statusbar["text"] = "major chord: "+" ".join(n for n, o in chord_keys)
oscillators = []
arguments["amplitude"] /= len(chord_freqs)
for f in chord_freqs:
arguments["frequency"] = f
oscillators.append(clazz(**arguments))
return MixingFilter(*oscillators)
else:
# no chord (or an LFO instead of audio output oscillator), return one osc for only the given frequency
return clazz(**arguments)