def bells():
def makebell(freq):
synth = WaveSynth()
duration = 2
divider = 2.2823535
fm = Triangle(freq/divider, amplitude=0.5)
s = synth.sine(freq, duration, fm_lfo=fm)
# apply ADSR envelope that resembles bell amp curve, see http://www.hibberts.co.uk/make.htm
s.envelope(0, duration*0.25, .5, duration*0.75)
s.echo(2, 5, 0.06, 0.6)
return s.make_32bit(False)
b_l1 = makebell(key_freq(56))
b_l2 = makebell(key_freq(60))
b_h1 = makebell(key_freq(78)).amplify(0.7)
b_h2 = makebell(key_freq(82)).amplify(0.7)
b_h3 = makebell(key_freq(84)).amplify(0.7)
bells = b_l1.mix_at(1.0, b_h1)
bells.mix_at(1.5, b_h2)
bells.mix_at(2, b_h3)
bells.mix_at(3, b_l2)
bells.mix_at(4, b_h2)
bells.mix_at(4.5, b_h3)
bells.mix_at(5, b_h1)
bells.make_16bit()
with Output.for_sample(bells) as out:
out.play_sample(bells)
out.wait_all_played()
def stereo_pan():
synth = WaveSynth()
# panning a stereo source:
wave = Sample("samples/SOS 020.wav").clip(6, 12).normalize().fadein(0.5).fadeout(0.5).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
out.wait_all_played()
# panning a generated mono source:
fm = Sine(0.5, 0.1999, bias=0.2)
wave = synth.triangle(220, 5, fm_lfo=fm).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
out.wait_all_played()
def echo_lfo():
synth = WaveSynth(22050)
s = Sine(440, amplitude=25000, samplerate=synth.samplerate)
s = EnvelopeFilter(s, .2, .2, 0, 0, 1.5, stop_at_end=True)
s = EchoFilter(s, .15, 5, 0.3, 0.6)
s = ClipFilter(s, -32000, 32000)
frames = [int(v) for v in s]
import matplotlib.pyplot as plot
plot.plot(frames)
plot.show()
samp = Sample.from_array(frames, synth.samplerate, 1)
with Output.for_sample(samp) as out:
out.play_sample(samp)
out.wait_all_played()
def a440():
synth = WaveSynth(samplerate=44100, samplewidth=4)
a440 = synth.sine(440, duration=2)
with Output.for_sample(a440) as out:
out.play_sample(a440)
out.wait_all_played()
print("but you cannot mix any sounds. It's ideal for playback of a single sound source,")
print("such as an audio clip or audio stream that comes in chunks.")
out.play_sample(s1)
out.play_sample(s2)
out.play_sample(s3)
out.play_sample(s4)
out.play_sample(s5)
out.play_sample(s5)
out.play_sample(s5)
out.play_sample(s6)
print("\nwaiting till all sounds have played...")
out.wait_all_played()
print("\nEnter to continue:")
input()
with Output.for_sample(s1, mixing="mix") as out:
if not out.supports_streaming:
raise RuntimeError("need api that supports streaming")
print("\nUsing time.sleep to time sounds.")
sid6 = out.play_sample(s6_soft, repeat=True)
out.play_sample(s1)
time.sleep(0.5)
out.play_sample(s2)
time.sleep(0.5)
out.play_sample(s3)
time.sleep(0.5)
out.play_sample(s4)
time.sleep(0.3)
out.play_sample(s5)
time.sleep(0.3)