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Evaluates the current selection by generating a sonagram. A sonagram is an evaluation of a signal over time (x axis), frequency (y axis) and intensity (color).
Number of points of the FFT, a whole number between 4 and 32767 which determines the frequency resolution.
The window function used for the FFT calculation, supported values are:
value description none no window function hamming Hamming window hanning Hanning window blackman Blackman window triangular Triangular window
If set to non-zero, use colors for intensity, if set to zero use grayscales.
If set to non-zero, the sonagram will be updated when the area that was evaluated has changed. If set to zero it will never be updated.
Not yet implemented, use zero for this parameter.