def get_sawtooth_square_wave(freq, offset, duration=0.1, framerate=40000):
signal_sawtooth = thinkdsp.SawtoothSignal(freq=freq,
amp=1.0,
offset=offset)
signal_square = thinkdsp.SquareSignal(freq=freq,
amp=1.0,
offset=offset + 2 * numpy.pi * 0.2)
components = [signal_sawtooth, signal_square]
signal = thinkdsp.SumSignal(*components)
wave = signal.make_wave(duration=duration, start=0, framerate=40000)
wave.ys = wave.ys / len(components) # normalization
return wave.ys
def synthesize1(amps, fs, ts):
"""Synthesize a mixture of cosines with given amps and fs.
amps: amplitudes
fs: frequencies in Hz
ts: times to evaluate the signal
returns: wave array
"""
components = [thinkdsp.CosSignal(freq, amp) for amp, freq in zip(amps, fs)]
signal = thinkdsp.SumSignal(*components)
ys = signal.evaluate(ts)
return ys
def synthesize1(amps, fs, ts):
components = [thinkdsp.CosSignal(freq, amp) for amp, freq in zip(amps, fs)]
signal = thinkdsp.SumSignal(*components)
ys = signal.evaluate(ts)
return ys
