Lexicon PCM 42 - 4.1.3 Flanging; FLANGING SETTINGS; 4.1.4 Resonant Effects; RESONANCE AND TALKING RESONANCE

4.1.3 Flanging
CEL AY BD LEVEt FEEDBACS. FUSER
WAVE CM
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POwEth
: delay
& @ PROCESSOF
2
VCO. SWEEP
Figure 4.5-f — FLANGING
The delay should be set initially with the DEPTH control fully counterclockwise. This effect will be most pronounced
on sound with rich harmonic content — those with reedy timbres or cornplex chords. Possible variations include
changing FB INV, FEEDBACK, and all VCO-SWEEP controls.
Th 7
This effect is known as a
5 produced by
The classic sweeping
ecording the same proc
ah
a
gram ape recorders and
mixing their output while jews m alternately. In be further al tere ed by recir-
effect, a short delay time (1 - 20 ms) is mixed with the back to the input. ere
direct signal and the delay time is varied continuously. or fee ack. cause exag-
nges. Phase inversion of the feed-
This causes cancellations of narrow frequency bands, eg]
called nulls, to sweep across the various components of back signal gives a characteristic ‘“hollow’’ sound.
the program input. Different harmonics are boosted or
cut in relation to each ather, causing the tone of the in- Use of the envelope follower me odula tion Source on
put to change in a characteristic Way: the PCM 42 produces an interesting “talking flange’;
sweep fs produced for each ae of the ee
A variation occurs if the polarity of the delayed signal Envelope and sine wave Sweep can be combined for a
is inverted with respect to the input signal. This causes complex sweep. Square wave modulation may be used
the nulls to fall only at the odd multiples of the fun- to create an unusual effect.
4.1.4 Resonant Effects
ORLAY <2 LEVEE FEEDBACK FRTER PHASE OUTPUT Mak SET. MODE DELAY res DEPTH. WAVER CRA Rm EE
= t
ERY steer OTK
VCO-SWEEP
Figure 4.5-g — RESONANCE
A pipe-y single-note resonance whose frequency may be varied in steps (with the delay time pushbuttons) or con-
tinuously (with the MANUAL VCO-SWEEP control).
SET-MODE OePTH basen best RATE
6 w a a ER
Figure 4.5-h — TALKING RESONANCE
A resonance that varies with signal level. Be sure to adjust the input LEVEL control for full modulation; moderate
overload will be taken care of by the PCM 42’s soft clipping circuits. (Severe clipping will still produce some unwanted
side effects.)
OELAY 82 LEVER FEEDBACK. PUTER
eo. Sree
Singing in the shower is one way to obtain a natural, are affected by the delay time, the amount of feedback
moderate resonant effect. Using the PCM 42 at short used, and the status of the HI-CUT and FB INV
delay times with large amounts of feedback causes pushbuttons. Turning FEEDBACK all the way up and
buildup of fundamental notes and harmonics whose the setting OUTPUT MIX on DELAY, with a delay time
period is equal to the set delay time. The effect is to add of about 12 ms, will create the “Cylon” voice of TV
a ringing, metallic quality to the sound, especially with fame.
percussive inputs. The pitch and tone of the resonance