Noise Suppressor; Noise Generator - Roland SD-90 Effects Manual

Audio multi-effects
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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 – +4 – +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.

Noise Generator

In addition to a Lo-Fi effect, this effect also generates various types of noise such as hum, pink noise, and disc
noise.
NZ SW (switch)
Off, On
Turns the noise generator effect on/off.
NZ DsType (disc type)
LP, EP, SP, RND
Determines the type of disc noise.
LP: 33 RPM record
EP: 45 RPM record
SP: 78 RPM record
RND: ramdom
NZ DsTone (disc tone)
-24 – 0 – +24
Specifies the volume of the disc noise.
NZ DsMix (disc mix level)
0 – 32 – +127
Adjust the balance between the disc noise volume and the direct sound volume.
NZ HmType (hum type)
50 Hz, 60 Hz
Select the type of hum noise.
NZ HmTone (hum tone)
-24 – 0 – +24
Adjusts the hum noise tone.
NZ HmMix (hum mix level)
0 – 32 – +127
Adjust the balance between the hum noise volume and the direct sound volume.
Audio Multi-Effects
25

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