Introduction to Signal Processors
Different functions performed by Signal Processors:
Equalizers:
The primary purpose of the Equalizer is the tune the speakers to
the room. The most common type of equalizer for this purpose is
the Graphic Equalizer. Once the system has been properly tuned,
(assuming you have good speakers), the sound in your room will be
accurate and feedback problems will be reduced.
Digital Delay:
In some larger churches, we install more than one set of speakers in the room. Sometimes there is a main set at the front, a second set about 2/3 of the way back, a third set for under balcony fill-in, and possibly a fourth set in the foyer. In cases like this, each set of speakers should be delayed so that the sound reaches people's ears from all speakers in front of them simultaneously.
Compressor / Limiters:
Compressor / Limiters are used primarily for two applications in
live sound. One is to limit the maximum sound pressure level from
the speakers in order to protect the speakers as well as ears. The
other is to even out differences in volume when you have different
people using a microphone, or when the person changes the volume
of their voice.
Feedback Suppressers:
A Feedback Suppresser is an electronic device which automatically
searches and destroys feedback. It is useful for unattended sound
systems where there is no one to stop the feedback if it occurs.
It is also helpful in increasing the amount of volume you can get
from a microphone before it goes into feedback.
System Processors:
A component we use in almost all the sound systems we install is
the Driverack260. This unit combines all of the above functions
into a single, programmable unit.
Effects Processors:
In Live Sound systems, an Effects Processor is primarily used to add room effects (echo and reverberation) to vocal microphones. They can also add special effects such as pitch shift etc.
Signal Processor Index | Equalizers
and Problem Solving Electronics
Effects Processors