Roland GT-PRO Owner's Manual download pdf (Page 37)

Chapter 4 Introduction to Effects and Parameters

Chapter 4

ACS (Advanced Compressor)

This is an effect that produces a long sustain by evening out

the volume level of the input signal. You can also use it as a

“limiter” to suppress only the sound peaks and prevent

distortion.

LM (Limiter)

The limiter attenuates loud input levels to prevent distortion.

TW (Touch Wah)

You can produce a wah effect with the filter changing in

response to the guitar level.

Parameter/

Range

Explanation

Type

see below Selects the compressor type.

BOSS Comp

This models a BOSS CS-3.

Hi-BAND

This is a compressor that adds an even

stronger effect in the high end.

Light

This is a compressor with a light effect.

D-Comp

This models a MXR DynaComp.

ORANGE

This is modeled on the sound of the Dan

Armstrong ORANGE SQUEEZER.

Fat

When applied heavily, this compressor ef-

fect provides a fat tone with a boosted

midrange.

Mild

When applied heavily, this compressor ef-

fect produces a sweet tone with the high end

cut.

Stereo Comp

This selects a stereo compressor.

Sustain

0–100

Adjusts the range (time) over which low-

level signals are boosted. Larger values will

result in longer sustain.

Attack

0–100

Adjusts the strength of the picking attack.

Larger values will result in a sharper attack,

creating a more clearly defined sound.

Tone

-50–+50 Adjusts the tone.

Level

0–100 Adjusts the volume.

Parameter/

Range

Explanation

Type

see below Selects the limiter type.

BOSS Limitr

This selects a stereo limiter.

Rack 160D

This models a dbx 160X.

Vtg Rack U

This models a UREI 1178.

Attack

0–100

Adjusts the strength of the picking attack

when the strings are played.

Higher values result in s sharper attack, creating a more clearly de-

fined sound.

Threshold

0–100

Adjust this as appropriate for the input sig-

nal from your guitar.

When the input signal level exceeds this threshold level, limiting will

be applied.

Ratio

1: 1–∞: 1

This selects the compression ratio used with

signals in excess of the threshold level.

Release

0–100

Adjusts the time from when the signal level

drops below the threshold until when limit-

ing is removed.

Level

0–100 Adjusts the volume.

Parameter/

Range

Explanation

Mode

LPF, BPF Selects the wah mode.

LPF (Low Pass Filter)

This creates a wah effect over a wide frequency range.

BPF (Band Pass Filter)

This creates a wah effect in a narrow frequency range.

Polarity

Down, Up

Selects the direction in which the filter will

change in response to the input.

The frequency of the filter will rise.

Down

The frequency of the filter will fall.

Sens

0–100

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.

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Roland GT-PRO Owner's Manual Page 37

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