DigiTech RP21D manual Reverbs

	RP21D User’s Guide	Section Two - Editing Functions
Loop	This parameter will engage, or disengage the loop function. With the loop function engaged, the sampled signal
	will automatically continue to repeat. Range on and off.
Over Dub	This parameter allows you to play one passage in to the sampler, and then layer another passage over the top of
	the first one. In other words, the two samples will combine. Ranges on and off.
RecPB	This selects whether the sampler is about to record a sample, or playback the existing sample. When no sample
	has been recorded, this will default automatically to the record mode. After a sample has been recorded, it will
	default to playback mode. Range record and playback.
Trig	This is the trigger parameter. Every time that the trig parameter is adjusted, it will repeat the recorded sample
	from the beginning.
Start Time	This parameter allows you to trim the beginning of the sample. If for instance the recorded sample has an
	undesired pause or noise at the beginning of it, the start time may be used to remove this from the sample. Range
	varies depending on the size of the module.
End Time	This parameter allows you to trim off the end of the sample. If the sample had recorded more than you wanted it
	to, this excess in the recording may be removed. Ranges vary depending on the size module that was used.
AudTrg	This is an on/ off parameter, which selects whether the recorded sample can be triggered (told to repeat) by the
	incoming audio signal, or not. Range on and off.
AudThr	This parameter selects the strength of the audio signal necessary to trigger the sample when the “”audio trigger”
	parameter has been set to on. Ranges from off to 100%
RecLvl	Adjusts the volume level of the source signal as it is recorded.
Direct	Adjusts the volume of the dry signal, or the signal that will pass through the sampler.
PlyLvl	Adjusts the volume level of the signal after it has been recorded by the sampler.

Reverbs

Reverberation is probably the most widely used effect because it allows you to simulate the sound reflection characteristics of almost any kind of room. In a real room, reverb is a result of sound reflecting off room surfaces such as the walls, floor, ceiling, and objects in the room. The materials, size, and shape of the room determine how long these reflections echo and decay before dying out completely. These factors also help determine the audio characteristics of the room, such as how long the high-frequency reverberations ring when compared to the low frequencies, or how much initial "slapback" the room wall produces when a sound hits.

Today’s technology allows the RP-21D to offer a complete palette of flexible, easy to use reverbs. There are seven basic reverbs to choose from:

1)Reverb - Simple, straight ahead reverb with only the most basic parameters.

2)Dual Reverb - Multi-dimensional reverb with flexible frequency band-splitting capabilities. The reverb can be divided into primary and secondary stages using selectable High or Low Pass cross-overs.

3)Stereo Dual Reverb - A true stereo version of the Dual Reverb.

4)Stereo Reverb - A true stereo version of the Reverb Module.

5)Gated Reverbs - A very linear, high energy reverb that can be set to decay, stay flat, or ramp up the reverb decay, creating many unique ambient effects.

6)Spring Reverb - A recreation of the old Spring Tank Reverb found in Vintage and Modern combo Amps.

7)Room Echo - A true stereo, multi-tap delay for creating small ambient spaces. The delays are divided into four sections of early reflections. These reflections can be placed anywhere in the stereo field and can be as dense or sparse as necessary. The Room Delay also includes a feedback loop for delay regeneration.

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