DigiTech QUAD4 User Manual download pdf (Page 18)

Gated Reverb

Stereo Gated Reverb

Spring Tank

Stereo Gigaverb

Gigaverb

Stereo Reverb

Reverb

Type

Selects the Module's reverb type. Reverbs can be one of ten reverb types or variations,

including Studio Room, Wood Room, Vocal Plate, Concert Hall, Plate Reverb, Chamber,

Cathedral, Arena, Cement Shelter, or Infinite Spring. Each room type has a different decay

range (just as real rooms do), so changing TYPE also changes the decay time of the room.

Gated reverbs can be one of twelve different types, including Flat, Shelf,Decaying Linear,

Decaying Logarithmic, Decaying Exponential, Decaying Sine, Reverse Linear, Reverse

Logarithmic, Reverse Exponential, Reverse Sine, Peaking Linear, and Peaking Exponential.

Density

Controls the number of discrete room wall reflections during the early portions of DECAY.

Higher settings produce more reflections while low settings yield fewer initial wall echoes.

Use this control in conjunction with DISPERSION to build or reduce the thickness of early

reflection clusters heard near the beginning of the reverberation. Varies from 0% to 99%.

PARAM. DESCRIPTION

Reverbs

Diffusion

Simulates the presence of different room materials by controlling the smoothness of

reverberations through the course of DECAY. Low DIFFUSION settings are great for

simulating hard, flat surfaces while higher DIFFUSION settings can be used to simulate the

presence of irregular surfaces in the room such as natural rock masonry or man-made

diffusers. Unlike flat surfaces, these materials reflect (diffuse) the sound in many directions

because of the irregularity of the surfaces themselves. This builds smoothness over the

reverb progression. Ranges from 0% to 99%.

Dispersion

Controls the distance (time) between the echoes set by DENSITY. If DENSITY is set low

and DISPERSION is set high, the initial room echoes can be heard as discrete echoes

followed by smoother room reverberations. Set DISPERSION low for a dense cluster of

reflections during the early portions of DECAY. Varies from 1 to 5.

Adjusts how quickly the room absorbs the high-frequency reverberations. In a real room,

absorptive materials can be used to dampen the natural high-frequency reverberations of

the room. High settings of DAMP cause the reverberations to darken tonally and become

less defined over the course of DECAY. Low settings cause less dramatic room effects on

the tone of the reverberations. Ranges from 1 to 7.

FX: Lvl Controls the signal input level fed to the Module. Varies from OFF to 100%.

Dry: Lvl

Controls the level of the dry (uneffected) signal. Ranges from OFF to 100%.

Balance

Controls the left/right positioning of the dry signal in the stereo soundfield. Varies from

-99 (all left) to 99 (all right).

LowPass

Appears only in Gated Reverbs. Selects the frequency above which all frequencies are

rolled off. This control can be used to darken the response of bright-sounding gated

reverbs. Ranges from 100 Hz to 8 kHz in the Gated Reverb and from 100 Hz to 20 kHz in

the Stereo Gated Reverb.

Room Echo

Time

Appears only in Gated Reverbs. Controls the length of the gated reverb in milliseconds

(much like the DECAY control of a normal reverb). Ranges from 25 milliseconds to 300

milliseconds (or 500 milliseconds on the Stereo Gated Reverb).

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X-Over

Type

Selects which crossover type will be used for the Primary and Secondary reverb stages.

The two crossover types are High Pass (HP) and Low Pass (LP).

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X-Over

Frequency

Selects the Frequency where the crossover begins to function. Ranges from 25Hz to

20kHz.

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Prim & Secd

X-Over

These two Parameters allow the crossover to be turned On or Off for each reverb stage.

When Off, that particular reverb stage will be full bandwidth, otherwise its frequency

response is limited by the X-Over Type and Frequency Parameters.

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Prim & Secd

Damp

Pre Delay

The Pre Delay parameter (which is available in all Reverb effect modules) controls the

amount of time before the input signal enters the Reverb effect. This parameter ranges

from 0 to 100 milliseconds.

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Section 3 - Effects and Parameters

Quad 4 User's Manual

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DigiTech QUAD4 User Manual Page 18

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