scipy.signal.ShortTimeFFT.
scipy.signal.ShortTimeFFT.dual_win#
- property ShortTimeFFT.dual_win#
Canonical dual window.
A STFT can be interpreted as the input signal being expressed as a weighted sum of modulated and time-shifted dual windows. Note that for a given window there exist many dual windows. The canonical window is the one with the minimal energy (i.e., \(L_2\) norm).
dual_win
has same length aswin
, namelym_num
samples.If the dual window cannot be calculated a
ValueError
is raised. This attribute is read only and calculated lazily.See also
dual_win
Canonical dual window.
m_num
Number of samples in window
win
.win
Window function as real- or complex-valued 1d array.
ShortTimeFFT
Class this property belongs to.