Boss Audio Systems BR-900CD User Manual

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Insert Effect Parameter Functions
Chorus
A sound with a subtly shifted pitch is added to the direct sound, 
making the final output sound thicker and broader. Best results will 
be achieved when stereo recording.
*
This effect can be used when the MODULATION “Type” parameter 
is set to “CHORUS.”
On/Off
OFF, ON
This parameter turns the chorus effect on/off.
Rate
0–100
Adjusts the rate of the Chorus effect.
Depth
0–100
Adjusts the depth of the Chorus effect.
Pre Dly
0.5–50.0 ms
Adjusts the time needed for the effect sound to be output after the 
direct sound has been output.
E.Level
0–100
Adjusts the volume of the effect sound.
Compressor
This corrects differences in input to create a steadier, more even 
volume balance. This is used to extend the sustain of input sounds 
and, conversely, to shorten sustain and emphasize the attack portion 
of sounds.
Another use of compression is as a “limiter,” which prevents 
distortion by suppressing only volume peaks.
On/Off
OFF, ON
This parameter turns the compressor effect on/off.
Sustain
0–100
This adjusts the depth of the effect. Higher settings values result in 
longer sustain times. Set this to a lower value when using 
compression for the limiter effect.
Attack
0–100
Adjusts the strength of the attack. Larger values will result in a 
sharper attack, creating a more clearly defined sound.
Level
0–100
Adjusts the volume.
COSM Comp (compressor)/Limiter
The compressor corrects differences in input to create a steadier, more 
even volume balance. It is used to extend the sustain of input sounds 
and, conversely, to shorten sustain and emphasize the attack portion 
of sounds.
The limiter is an effect that prevents distortion by suppressing input 
signals that exceed a set value (threshold). You can get the same effect 
achieved with the compressor by setting the threshold at a low value.
The BR-900CD uses COSM technology to model four types of 
compressor/limiter in which the compressor and limiter functions are 
combined. 
On/Off
OFF, ON
Sets the compressor/limiter to ON or OFF.
Type
Selects the compressor/limiter type.
BOSS-Cmp:
Models the BOSS CS-3 compact effects processor.
D-Comp:
Models the MXR dyna comp.
Rack160:
Models the dbx 160.
VtgRack:
Models the UREI 1178.
Attack 
(with BOSS-Cmp, D-Comp)
0–100
Adjusts the strength of the picking attack when the strings are 
played. Larger values will result in a sharper attack, creating a more 
clearly defined sound.
Sustain 
(with BOSS-Cmp, D-Comp)
0–100
Boosts low-level signals, adjusting the time over which sounds are 
sustained. Higher values deepen the effect, resulting in a longer 
sustain.
Threshold 
(with Rack160)
0–100
Adjust this as appropriate for the input signal from your bass. The 
compression effect is applied to input above the level set here. The 
smaller the value set here, the lower the level at which the limiter 
effect kicks in.
Input 
(with VtgRack)
0–100
Controls the input level. Increasing the value will produce a deeper 
effect.
Ratio
(with Rack160)
 1:1–20:1, INF:1   
(with VtgRack)
 4:1–20:1
Adjusts the limiter compression ratio. Higher ratio create a stronger 
compression effect.
Attack Time 
(When set to VtgRack)
0–100
This adjusts the amount of time it takes for the compression ratio set 
in Ratio to be reached once compression begins, as the input level 
exceeds the set threshold level. The larger the value set here, the 
more rapidly compression is applied.
Release Time 
(with VtgRack)
0–100
This adjusts the time from when the signal level drops below the 
threshold until when the compression is removed. The lower the 
values set, the more rapidly the compression is released, and the 
more clearly the sound from the next string played is heard.
Tone 
(with BOSS-Cmp)
-50–+50
Adjusts the tone. The higher the value set, the more the high 
frequencies are boosted, resulting in a harder sound.
Level
0–100
Adjusts the volume.