from ysynth import *

synth = YSynth()
#synth.set_graph(Sin(440 + 110 * Sin(1)))
#synth.set_graph((Saw(440) + Sin(550)) * 0.25)
#synth.set_graph(Square(220) * 0.5)
#synth.set_graph(Sin(440 + 44 * Sin(4) + 110 * Square(0.5)) * 0.1)
#synth.set_graph(Sin(440 * (Saw(0.5) + 1.0) * 0.5) * 0.05)
#synth.set_graph(Sin(220) * 0.5)
#synth.set_graph(Pulse(220) * 0.25)
#synth.set_graph(Sin(440) * 0.25)
#synth.set_graph(WhiteNoise() * 1.0)

# Should sound vagely similar to a flanged whitenoise signal
noise = WhiteNoise()
synth.set_graph((noise + noise[50 + 100 * (Sin(0.1) + 1)]) * 0.5 * (RevSaw(2) + 1) * 0.5)
#synth.set_graph(Sin(440) * RevSaw(5) * 0.2)
#synth.set_graph((Sin(440) * 0.5, Sin(220) * 0.5))
#synth.set_graph(Sin((440, 220)) * 0.5)

def short_pulse(shortness, silence):
    z = (Square(2. ** shortness) + 1) * 0.5
    for i in xrange(silence):
        z = z * (Square(2. ** (shortness - i)) + 1) * 0.5

    return z

# Echo effect
#sine_pulse = Sin(440) * short_pulse(3, 4) * 1.0
#sine_pulse = sine_pulse * 0.9 + sine_pulse[2000] * 0.1
#synth.set_graph(sine_pulse)

def harmonics(osc, freq, count):
    return reduce(lambda a, b: a + b,
        (osc(freq * i) for i in xrange(1, count + 2))) \
        / (count + 1)