Owner`s manual

Sounds that are louder than the threshold get “through the gate” un-

changed. Sounds that are below the threshold are not heard. Gates can be

used to great effect in processing drum tracks where sounds from the

other instruments in the drum set leak through the mike of the instru-

ment being recorded. Gates are also used frequently to “gate off” a

reverb tail or the ringing from an insufficiently damped drum head.

Compression and Expansion Combined

The AVP allows you to use both compression and expansion simulta-

neously. This ability is useful in taming the typical problems that arise

when processing vocal tracks. The graph below illustrates the use of

compression with a downward expanding gate.

Using this setting, levels above the compressor threshold will be com-

pressed at a 4 to 1 ratio. Levels below the compressor threshold but above

the gate threshold will not be changed. Levels below the gate threshold

will be gated out completely.

Used on a vocal track, this setting will compress only hot peaks in the

voice, while gating out the room sounds, mike stand sounds, and breath

noises in the track. Precisely what gets compressed and gated is a function

of the compressor and gate threshold settings.

The graph below shows a dynamic expander. In this application, the gate

threshold and ratio are set to gently expand the program material at a 1.5

to 1 ratio. The compressor ratio is set to 1 to 1. The setting is useful for

repairing over-compressed material or for adding some punch to drums or

other percussive sounds.

OUTPUT

LEVEL

INPUT LEVEL

LOUDER

GATE THRESHOLD

COMPRESSOR THRESHOLD

1 TO 99 EXPANSION RATIO

4 TO 1 RATIO