FreqShift
=============

Double frequency shifter module.

.. image:: /images/Parametres_FreqShift.png


Sliders under the graph:
    - Frequency Shift 1: First frequency shift value.
    - Frequency Shift 2: Second frequency shift value.
    - Filter Freq: Cut-off frequency of the lowpass filter.
    - Filter Q: Q factor of the lowpass filter.
    - Feedback Delay: Delay time (in seconds) causing the feedback.
    - Feedback: 
    - Feedback Gain: 
    - Dry/Wet: Mix between the original signal and the shifted signals.

Dropdown menus and toggles:
    - Balance: Adjust the signal amplitude by comparing it with a sinusoidal wave with a fixed amplitude (see "compress") or with the amplitude of the source (see "source").
    - # 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.
