SpectralDelay
===============

Spectral delay module based on fast-Fourier-transform (FFT) operations.

.. image:: /images/Parametres_SpectralDelay.png

Sliders under the graph:
    - Bin Regions: Split points in the frequency range for FFT processing.
    - Band 1 Delay: Delay time applied on the first band.
    - Band 1 Amp: Gain of the delayed first band.
    - Band 2 Delay: Delay time applied on the second band.
    - Band 2 Amp: Gain of the delayed second band.
    - Band 3 Delay: Delay time applied on the third band.
    - Band 3 Amp: Gain of the delayed third band.
    - Band 4 Delay: Delay time applied on the fourth band.
    - Band 4 Amp: Gain of the delayed fourth band.
    - Band 5 Delay: Delay time applied on the fifth band.
    - Band 5 Amp: Gain of the delayed fifth band.
    - Band 6 Delay: Delay time applied on the sixth band.
    - Band 6 Amp: Gain of the delayed sixth band.
    - Feedback: Amount of the delayed signal fed back into the delays (feedback is band independent).
    - Dry/Wet: Mix between the original signal and the delayed signals.

Dropdown menus and toggles:
    - FFT Size: Window size of the FFT (in samples - 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 or 8192).
    - FFT Envelope: Envelope type for the FFT (rectangular, Hanning, Hamming, Bartlett, Blackmann 3, 4 or 7, Tuckey or sine).
    - FFT Overlaps: Number of FFT overlaps (1, 2, 4, 8 or 16).
    - # of Polyphony: Number of voices played simultaneously (polyphony); only available at initialization time.
    - Polyphony Spread: Pitch variation between polyphony voices (chorus); only available at initialization time.

Graph only parameters:
    - Overall Amplitude: The amplitude curve applied on the total duration of the performance.

