Yamaha SY85 Owner's Manual page 158

Fmod (Frequency modulation depth)
EGBs (EG bias depth)
Coff (Cutoff frequency depth)
86
VOICE EDIT MODE /
Range: 0 ... 127
Controls: [CS6], [-1] [+1], Dial
Sets the maximum depth of filter cutoff frequency modulation (wah-wah
type effects) applied via the foot controller.
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 the foot controller. Also, the filter "CTRL" parameter (page
68) must be set to "LFO" in order to vary the cutoff frequency continuously.
Range: -127 ... +127
Controls: [CS7], [-1] [+1], Dial
Sets the depth and "direction" of EG bias produced by the foot controller.
EG bias increases or decreases the amplitude envelope generator levels, simu-
lating the dynamic variations that can be produced on an acoustic instrument
more accurately than simple volume control.
A setting of "0" produces no change in EG levels. Plus ("+") settings
produce an increase in level when the foot controller is applied, and minus ("-
") settings produce a decrease in level when the foot controller is applied. The
greater the value, the greater the change in level.
Range: -127 ... +127
Controls: [CS8], [-1] [+1], Dial
Sets the maximum depth of filter cutoff frequency variation applied via the
foot controller.
Plus "+" settings produce higher cutoff frequencies in response to foot
controller operation — i.e. the more the foot controller is depressed, the higher
the cutoff frequency. The maximum setting of "+127" produces the maximum
cutoff variation. Minus "-" settings produce the opposite effect: lower cutoff in
response to higher foot controller positions. A setting of "+0" results in no
cutoff variation. The filter "CTRL" parameter (page 68) must be set to "LFO"
in order to vary the cutoff frequency continuously.
6:Controller