User Guide

Using Help | Contents | Index Back 185
Adobe After Effects Help Applying Effects
Using Help | Contents | Index Back 185
Backwards
This effect reverses an audio footage item by playing it from the last frame or keyframe to
the first frame or keyframe. The frames remain in their original order when viewed in the
Timeline window.
Bass & Treble
Make basic adjustments to the audio tone of an audio layer using this effect by specifying
the amount of boost or cut applied to the low frequencies of the audio layer. If you need
greater control in working with audio tone, use the Parametric Equalization effect in the
After Effects Production Bundle. The Bass/Treble option specifies the amount of boost or
cut applied to the low frequencies of the audio layer.
Delay
This effect repeats the sounds in the audio footage after a specified amount of time. It
simulates sound bouncing off a surface, such as a wall some distance away.
For more information, see the After Effects product section on Adobe’s Web site.
Flange & Chorus (PB only)
This effect combines two separate audio effects, Flange and Chorus, into a single effect.
Chorus is commonly used to add depth and character to audio footage that contains a
single instrument or voice. Chorus makes one voice sound like many voices.
Flange applies a copy of the sound that is detuned, or played at a frequency slightly offset
from the original. By experimenting with the voice-separation time and the modulation
depth, you can create a wavy, rushing sound. The default settings apply to the Flange
effect alone.
For more information, see the After Effects product section on Adobe’s Web site.
High-Low Pass (PB only)
This effect sets a limit above or below which frequencies can pass. High Pass allows
frequencies above the limit and blocks frequencies below. Conversely, Low Pass allows
frequencies below the limit and blocks frequencies above. Use High-Low Pass to enhance
or attenuate (reduce) a sound, change the focus from one sound to another over time,
protect equipment from potentially damaging frequencies, or direct certain frequencies
to specific equipment.
For more information, see the After Effects product section on Adobe’s Web site.
Modulator (PB only)
This effect adds both vibrato and tremolo to audio by modulating (varying) the frequency
and amplitude. You can create a Doppler effect, such as when a train whistle gets higher in
pitch as it approaches an observer, and then drops in pitch as it passes. Use Sine
modulation to produce the purest sounds; use Triangle to produce more distorted sounds.
For more information, see the After Effects product section on Adobe’s Web site.