Boss Audio Systems BR-900CD - Manual (Page 101)

101
Insert Effect Parameter Functions
Section 3
Wah
The wah effect creates a unique tone by changing the frequency
response characteristics of a filter.
Touch wah creates an automatic wah by changing the filter in
response to the volume of the input. Pedal wah lets you use an
Expression pedal or the like to obtain real-time control of the wah
effect.
* You can use this effect with the following algorithms when
“WAH” is selected for the 4BAND EQ/WAH “Type” setting.
COSM GTR AMP COSM BASS AMP
COSM COMP GTR COSM COMP BSS
BASS MULTI STEREO MULTI
On/Off OFF, ON
Turns the touch wah/pedal wah effect on/off.
Type
Selects either touch wah “TOUCH” or pedal wah “PEDAL.”
TOUCH:
The effect will function as a touch wah.
PEDAL:
The effect will function as a pedal wah.
■ When “TOUCH” is selected
Polarity
Selection for the direction in which the filter will change in response
to the input.
UP:
The frequency of the filter will rise.
DOWN:
The frequency of the filter will fall.
Sens 0–100
This adjusts the sensitivity at which the filter will change in the
direction determined by the polarity setting. Higher values will
result in a stronger response. With a setting of “0,” the strength of
picking will have no effect.
Frequency 0–100
This adjusts the center frequency of the Wah effect.
Peak 0–100
This adjusts the amount of wah effect applied. Lower values provide
a mild wah effect, while higher values result in a sharper wah sound.
With a value of “50” a standard wah sound will be produced.
Level 0–100
Adjusts the volume.
■ When “PEDAL” is selected
The effect of the wah pedal can be obtained by operating the
Expression pedal.
For a detailed explanation, refer to “When Using an Expression
Pedal” (p. 187).
Peak 0–100
This adjusts the amount of wah effect applied. Lower values provide
a mild wah effect, while higher values result in a sharper wah sound.
With a value of “50” a standard wah sound will be produced.
Level 0–100
Adjusts the volume.