Chorus – a sound processor that makes a sound seem doubled by creating several delayed copies of the original sound and slightly varying the pitch of each copy. Used to “thicken” a sound.
Decay – How fast a sound fades from a certain loudness.
Flanger – Uses the same process as a chorus, but with dramatically short delays. Rather than “thickening” a sound, a flanger is usually less subtle. It’s been described as sounding “like an airplane flying right over your head.”
Phaser – A sound processor that removes certain random frequencies by creating a copy of the soundwave and moving it back and forth, causing a “phasing” sound.
Pitch shifter – A sound processor that changes the pitch of a sound.
Sustain – How long a sound can hold before it begins to fade.
Threshold – A parameter of a sound processor that tells the processor to not kick in until the volume of an incoming sound exceeds the set volume limit. For example, a compressor does not start to turn down audio until the instrument gets louder than the threshold set by the user.
Tremolo – A sound processor that either quickly turns the volume of a sound up and down, or quickly pans it left to right.
