Aligning Subs To Mains; Effect Types; Reverb And Its Parameters - PRESONUS studiolive III series Owner's Manual

11 Resources
11.8

Effect Types

Aligning Subs to Mains

11.7.3
11.8 Effect Types
11.8.1

Reverb and its Parameters

When your subwoofer and your full-range loudspeaker are placed some distance
apart, low-frequency cancellation or reinforcement can occur when the same
frequencies are reproduced by both systems. Using an alignment delay on your
subwoofer system will compensate for this. To set the correct delay for a custom
installation, you will need to do some calculating:
1. Find the spot in the room where coverage from the main speakers and the
subwoofers overlap.
2. Measure the distance from the overlap area to each speaker location.
3. Subtract the smaller distance (the distance to the subwoofer) from the larger
distance (the distance to the full-range loudspeaker).
4. Multiply the distance by 1.1 (if measured in feet) or 0.34 (if measured in meters)
and apply that delay value to the Aux mix driving the subwoofer. Keep in mind
that the overlap area may be behind front-of-house.
Your StudioLive mixer is equipped with four stereo effects processors. Each of these
processors has its own aux bus, allowing you to independently control the mix of
channels feeding them. This section will guide you through the basics of several
common effect types.
Reverberation—or reverb, as it is more commonly known—is perhaps the most
widely used effect. Natural reverb is created by sound waves reflecting off of a
surface or many surfaces. For example, when you walk across the wooden stage
in a large hall, thousands of reflections are generated almost instantaneously as
the sound waves bounce off the floor, walls, and ceilings. These are known as early
reflections, and their pattern provides psycho-acoustic indications as to the nature of
the space that you are in, even if you can't see it. As each reflection is then reflected
off of more surfaces, the complexity of the sound increases, while the reverb slowly
decays.
The reason for the widespread use of reverb in audio recording is fairly self-evident:
human beings don't live in a vacuum. Because our brains receive cues about the
nature of the space around us based partially on audio reflections, a sense of space
makes an audio recording sound more natural and, therefore, more pleasing.
StudioLive™ Series III
Owner's Manual
Overlap
Area
102