Lexicon MPX 200 - REV 2 Manual page 56

Program Descriptions
DELAY, ECHO
Delays and echoes repeat a sound a short time after it
first occurs. The simplest (and oldest) delay effect is tape
slap - a single repeat about 100ms after the original
sound. Tape slap was often used on Elvis Presley's voice
and rockabilly guitar tracks.
Tape slap becomes tape echo when the output of the
tape is fed back into the input (feedback). This turns a
single repeat into a series of repeats, each a little softer
and a little darker than the last. This darkening is
characteristic of the analog tape recording process.
Digital echoes do not have this characteristic; each
repeat has the same exact timbre. For digital echoes,
loudness is the only difference from repeat to repeat.
Tape and digital echoes are both useful, but different.
Tape echo is warmer, allowing the original sound to
distinguish itself. Digital echo presents a "perfect" copy
of the original sound.
4-14
The Delay and Echo programs include mono (5.5
seconds), stereo (2.7 seconds), and 6-voice multi-tap
effects. Each program can be used for tape or digital
delay or echo effects. When the Adjust parameter is set
to a value between 0 and 63, digital delay effects are
produced. Each repeat is the same timbre, but softer.
When the Adjust parameter is set to a value between 64
and 127, tape effects are produced. Each repeat is
darker and softer.
In programs 90 to 97, the Adjust parameter sets the
amount of feedback with an increasing number of
repeats as the setting is increased. Delay time is set with
Tap. Each program is preset with a different useful
rhythm. In programs 98 to 104, the amount of feedback
is preset and the Adjust parameter determines the delay
time.
With all delay and echo effects, note the way the repeats
fall rhythmically to the beat. The most typical delay and
echo patterns are those that lock with the tempo of the
music.
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