Yamaha TG500 - Manual (Page 158)

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VOICE EDIT MODE / 3: Full Edit. 3-6: Controller
3-6-03: MIDI CONTROLLER 1 / 3-6-04: MIDI CONTROLLER 2
Fmod (Frequency modulation depth)
Range: 0 … 127
Sets the maximum depth of filter cutoff frequency modulation (wah-wah
type effects) applied via MIDI controller 1 or 2.
A setting of “0” allows no frequency modulation, while a setting of 127
results in maximum frequency modulation.
When setting up the LFO (low-frequency oscillator) to apply cutoff modula-
tion, this parameter must be set to a value other than “0” if cutoff modulation
is to be applied via MIDI controller 1 or 2. Also, the filter “Ctrl” parameter
(page 123) must be set to “LFO” in order to vary the cutoff frequency continu-
ously.
EGBs (EG bias depth)
Range: -127 … +127
Sets the depth and “direction” of EG bias produced by MIDI controller 1 or
2. EG bias increases or decreases the amplitude envelope generator levels,
simulating the dynamic variations that can be produced on an acoustic instru-
ment more accurately than simple volume control.
A setting of “0” produces no change in EG levels. Plus (“+”) settings
produce an increase in level when MIDI controller 1 or 2 is applied, and minus
(“–”) settings produce a decrease in level when MIDI controller 1 or 2 is
applied. The greater the value, the greater the change in level.
Cof (Cutoff frequency depth)
Range: -127 … +127
Sets the maximum depth of filter cutoff frequency variation applied via
MIDI controller 1 or 2.
Plus “+” settings produce higher cutoff frequencies in response to MIDI
controller 1 or 2 — i.e. the higher the control value, the higher the cutoff
frequency. The maximum setting of “+127” produces the maximum cutoff
variation. Minus “–” settings produce the opposite effect: lower cutoff in re-
sponse to higher control values. A setting of “+0” results in no cutoff variation.
The filter “Ctrl” parameter (page 123) must be set to “LFO” in order to vary
the cutoff frequency continuously.