Isolator; Noise Suppressor - Roland SD-90 Effects Manual

Audio Multi-Effects

Isolator

Divides the input sound into three frequency bands to abstract or eliminate the sound.
IS SW (switch)
Off, On
Turns the isolator on/off.
IS Low (low level)
0 – +127
Increases or decreases frequency bands in the low frequency band.
IS Mid (middle level)
0 – +127
Increases or decreases frequency bands in the middle frequency band.
IS High (high level)
0 – +127
Increases or decreases frequency bands in the high frequency band.
IS Lev (level)
0 – +127
Adjusts the total volume.

Noise Suppressor

The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +8 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.
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