Chorus - adds richness to a sound by making it sound as
though several voices or instruments are being played at once. Chorus is a
great way to add a degree of "presence" to an existing track: you
can use it to give a stereo effect to a mono sample (where left and right
channels are identical), or to add harmony or "thickness" to a vocal
track.
Delay - may be used to create single echoes, as well as
a number of other effects. Delays of 35 milliseconds (ms) or more will be
perceived as discrete echoes, while those falling within the 35-15 ms range
can be used to create a simple chorus or flanging effect. (These effects won't
be as effective as the actual chorus or flanging effects within the transform
menu, as the delay settings will be fixed and won't change over time.) By
reducing the delay times further down into the 15-1 ms range, a mono sound
may be spatially located so that it appears as though the sound is coming
from the left or the right side, even though the actual volume levels for
left and right of the wave are identical.
Echo - adds a series of repeated, decaying echoes to a
sound (unlike the delay effect which creates only a single echo). Effects
rang from a Grand Canyon Hello-ello-llo-lo-o to "boingy" drain pipe
sounds. Processes sound as if it were recorded in room with configurable characteristics
from one with reflective surfaces (yielding echoes that have a bright, shiny
high-end) to one that is almost totally absorptive (very little reflected
high-end sounds) by equalizing the delays. Striking stereo echo effects by
using different Left and Right channel values for the Ration, Delay, and Initial
Echo Volume controls.
3D Echo Chamber - can create almost any room ambiance,
with settings for specifying room size and surface characteristics, along
with the placement of microphones within the virtual room.
Flanging - originally achieved by sending an audio signal
to two reel-to-reel tape recorders, and then physically slowing down the reels
of one machine. The resulting sound is a phase-shifted, time delay effect
characteristic of the psychedelic sounding recordings in of the 60's. Digitally
this same effect is created by slightly delaying and phasing a signal at predetermined
or random intervals.
Reverb - an effect used to simulate acoustic space, and
consists of both early reflections, and echoes that are so closely spaced
that they are perceived as a single decaying sound. Reverb is different from
the basic echo function in that the delays aren't repeated at regularly spaced
intervals. Can create a wide range of high-quality reverb effects. It can
reproduce such acoustic or "ambient" environments as a coat closet,
tiled bathroom shower, concert hall or grand amphitheater. Initial early-reflection
delays can be used to give a sense of room size.
Phaser - like the Flanger effect, a Phaser introduces a
variable phase-shift to a split signal and recombines it, creating special
effects popularized by guitarists of the 60's. The Sweeping Phaser sweeps
a notch or boost type filter back and forth about a center frequency. A phase
is similar to a flange, except that instead of using a simple delay, frequencies
are phase-shifted over time. When used on stereo files, the stereo image can
be dramatically altered to create some truly interesting sounds.
