TimeStretch/python/rwindow.py at main · spluta/TimeStretch · GitHub

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import numpy as np

def phis(N):

alphas = np.arange(N)/(N-1)

return np.pi*alphas/2

def f_scl(N):

alphas = np.arange(N)/(N-1)

return alphas/(1 - alphas)

def f_tan2(N):

return np.tan(phis(N))**2

def f_tan(N):

return np.tan(phis(N))

def w_i(r, fs):

return np.sqrt(1/(1 + 2*fs*r + fs**2))

def w(r, fs):

return fs * w_i(r, fs)

def xfade_with_windows(x1, x2, r, fs):

w1 = w(r, fs)

w2 = w_i(r, fs)

mix = w1*x1 + w2*x2

return mix

variable_window_funcs = {

'w_tan': f_tan,

'w_tan2': f_tan2,

'w_scl': f_scl

}

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