Yamaha SY85 Owner's Manual (feature Reference) (image) - Page 89
Fmod Frequency modulation depth, EGBs EG bias depth, Coff Cutoff frequency depth, PtBs Pitch bias
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Fmod (Frequency modulation depth) Range: 0 ... 127 Controls: [CS5], [-1] [+1], Dial Sets the maximum depth of filter cutoff frequency modulation (wah-wah type effects) applied via keyboard aftertouch. 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 modulation, this parameter must be set to a value other than "0" if cutoff modulation is to be applied via keyboard aftertouch. Also, the filter "CTRL" parameter (page 68) must be set to "LFO" in order to vary the cutoff frequency continuously. EGBs (EG bias depth) Range: -127 ... +127 Controls: [CS6], [-1] [+1], Dial Sets the depth and "direction" of EG bias produced by aftertouch response. EG bias increases or decreases the amplitude envelope generator levels, simulating 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 aftertouch is applied, and minus ("-") settings produce a decrease in level when aftertouch is applied. The greater the value, the greater the change in level. Coff (Cutoff frequency depth) Range: -127 ... +127 Controls: [CS7], [-1] [+1], Dial Sets the maximum depth of filter cutoff frequency variation applied via keyboard aftertouch. Plus "+" settings produce higher cutoff frequencies in response to aftertouch - i.e. the greater the aftertouch pressure, 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 greater aftertouch pressure. 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. PtBs (Pitch bias depth) Range: -12 ... +12 Controls: [CS8], [-1] [+1], Dial Sets the maximum pitch variation range achievable via after-touch control. Each increment represents a semitone. A setting of "0" produces no pitch variation. A setting of "+12" allows a maximum pitch variation of one octave up, while a setting of "-12" allows a maximum pitch variation of one octave down corresponding to aftertouch key pressure. 88 VOICE EDIT MODE / 6:Controller