Final Cut Pro X Logic Effects - Tremolo Effect

background image

Tremolo Effect

The Tremolo effect modulates the amplitude of the incoming signal, resulting in periodic
volume changes. You’ll recognize this effect from vintage guitar combo amps (where it
is sometimes incorrectly referred to as vibrato). The graphic display shows all parameters,
except Rate.

Depth slider and field: Determines the modulation amount.

Waveform display: Shows the resulting waveform.

Rate knob and field: Sets the frequency of the LFO.

Symmetry and Smoothing knobs and fields: Use these to alter the shape of the LFO


If Symmetry is set to 50% and Smoothing to 0%, the LFO waveform has a rectangular
shape. This means that the timing of the highest and lowest volume signals is equal,
with the switch between both states occurring abruptly.

Phase knob and field: Available only in stereo and surround instances. Controls the

phase relationship between the individual channel modulations. At 0, modulation
values are reached simultaneously for all channels. Values of 180 or −180 indicate the
greatest possible distance between the modulation phases of the channels.

Distribution pop-up menu: Available only in surround instances. Defines how phase

offsets between individual channels are distributed in the surround field. You can
choose from “circular,” “left

right,” “front

rear,” “random,” and “new random”

distributions (to randomize the phase, choose “new random”).

Offset slider and field (Extended Parameters area): Sets the amount that the modulation

(cycle) is shifted to the left or right, resulting in subtle or significant tremolo variations.


Chapter 5

Modulation Effects

background image

You can use spaces effects to simulate the sound of acoustic environments such as rooms,
concert halls, caverns, or an open space.

Sound waves repeatedly bounce off the surfaces—walls, ceilings, windows, and so on—of
any space, or off objects within a space, gradually dying out until they are inaudible.
These bouncing sound waves result in a reflection pattern, more commonly known as a
reverberation (or reverb).

The starting portion of a reverberation signal consists of a number of discrete reflections
that you can clearly discern before the diffuse reverb tail builds up. These early reflections
are essential in human perception of spatial characteristics, such as the size and shape
of a room.

Signal Discrete


Diffuse reverb tail

Reflection pattern/reverberation


This chapter covers the following:

Plates, Digital Reverb Effects, and Convolution Reverb

(p. 98)


(p. 99)