def METHOD_NAME(self):
    sr = 44100
    size = sr*1;
    freq = 440
    w = 2.0*pi*freq
    subw = 2.0*pi*(freq-100)
    nharms = 10
    signal = zeros(size)
    for i in range(1,size):
        # masking noise:
        whitenoise = 2*(random.rand(1)-0.5)
        signal[i] += 2*whitenoise
        for harm in range(1,nharms):
            signal[i] += 1./harm*sin(i*harm*w/sr)
    signal = 5*LowPass()(signal)
    for i in range(1,size):
        for harm in range(1,nharms+1):
            signal[i] += .1/harm*sin(i*harm*w/sr)
        signal[i] += 0.5*sin(i*subw/sr)
    max_signal = max(signal) + 1
    signal = signal/max_signal
    self.runTest(signal, sr, freq, 1.5, 0.3)