Tremolo effect in Logic Pro for iPad
Tremolo modulates the amplitude of the incoming signal, resulting in periodic volume changes. Tremolo is commonly used in vintage guitar combo amps, where it is sometimes incorrectly referred to as vibrato. The graphic waveform display shows all parameters except Rate.
To add Tremolo to your project, choose Modulation > Tremolo in a channel strip Audio Effect plug-in menu or the Plug-ins area. See Intro to plug-ins. Also see Add, replace, reorder, and remove plug-ins in the Plug-ins area and Work with plug-ins in the Mixer.
Tremolo parameters
Rate knob and field: Set the frequency of the LFO.
Sync button: Synchronize the modulation speed with the project tempo. Choose musical note values with the Rate knob.
Depth knob and field: Determine the modulation amount.
Smoothing knob and field: Change the shape of the LFO waveform. Also see Symmetry.
Offset knob and field: Set the amount of left or right movement for the modulation (cycle). This results in small or large tremolo variations.
Symmetry knob and field: Skew the balance toward the upward or downward phase of waveform cycles.
Note: If Symmetry is set to 50% and Smoothing to 0%, the LFO waveform becomes rectangular. The timing of the highest volume signal is then equal to the timing of the lowest volume signal, with the switch between both states occurring abruptly.
Stereophase knob and field: Control the phase relationship between individual channel modulations in stereo signals. At 0, modulation values are reached simultaneously for both channels. At values of 180 or −180, there is the greatest possible distance between the modulation phases of both channels.
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