Multipressor controls in Logic Pro for iPad
Multipressor controls for each frequency band are identical.
Common band parameters
Band On/Off button: Turn each band on or off. When enabled, the button is highlighted.
Gain Reduction field: Shows the amount of level reduction or expansion.
Bypass button: Bypass the selected frequency band.
Solo button: Turn on to hear compression or expansion only for the selected frequency band.
Xover slider and field: Drag to set the crossover frequency between adjacent bands.
Compressor parameters
Comp. Threshold knob and field: Set the compression threshold for the selected band. Setting the parameter to 0 dB results in no compression of the band. This parameter can also be set with the upper arrow to the left of each level meter.
Comp. Ratio knob and field: Set the compression ratio for the selected band. Setting the parameter to 1:1 results in no compression of the band.
Attack knob and field: Set the time before compression starts for the selected band, after the signal exceeds the threshold.
Release knob and field: Set the time before compression stops on the selected band, after the signal falls below the threshold.
Response field: Drag vertically to set a smaller value for shorter (peak) detection or a larger value for longer (RMS) detection, in milliseconds.
Make Up slider and field: Drag to set the amount of the gain make-up for each band.
Expander parameters
Exp. Threshold knob and field: Set the expansion threshold for the selected band. Setting the parameter to its minimum value (−60 dB) means that only signals that fall below this level are expanded.
Exp. Ratio knob and field: Set the expansion ratio for the selected band.
Reduction slider and field: Set the amount of downward expansion for the selected band.
Global parameters
Multipressor output parameters are global and affect all frequency bands.
AutoGain button: Turn on to reference the overall processing of the signal to 0 dB, making the output louder.
Lookahead field: Drag to set how far ahead the effect analyzes the incoming signal, allowing faster reactions to peak volumes.
Master Gain knob and field: Set the overall amount of gain at the Multipressor output.
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