LooperMod : Looper module with optional amplitude and frequency modulation
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Description
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A simple soundfile looper with optional amplitude and frequency modulations
of variable shapes.

Sliders
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    **AM Range** : 
        Minimum and maximum amplitude of the Amplitude Modulation LFO
    **AM Speed** : 
        Frequency of the Amplitude Modulation LFO
    **FM Range** : 
        Minimum and maximum amplitude of the Frequency Modulation LFO
    **FM Speed** : 
        Frequency of the Frequency Modulation LFO
    **Dry / Wet** : 
        Mix between the original signal and the processed signal

Graph Only
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    **Overall Amplitude** : 
        The amplitude curve applied on the total duration of the performance

Popups & Toggles
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    **AM LFO Type** : 
        Shape of the amplitude modulation waveform
    **AM On/Off** : 
        Activate or deactivate the amplitude modulation
    **FM LFO Type** : 
        Shape of the frequency modulation waveform
    **FM On/Off** : 
        Activate or deactivate frequency modulation
    **Polyphony Voices** : 
        Number of voices played simultaneously (polyphony), 
        only available at initialization time
    **Polyphony Spread** : 
        Pitch variation between voices (chorus), 
        only available at initialization time

    