Specifications
TECHNICAL SUPPORT: 1.800.283.5936 (USA) OR 1.801.974.3760
GLOSSARY
161
Expansion Bus Consists of two RJ45 connectors on the rear panel of the
PSR1212. An Expansion Bus allows multiple PSR1212s to be networked
together using category five twisted-pair (10BaseT LAN) cable.
Filter A device that passes and blocks audio signals based on
requirements of the system.
Filter, All Pass A filter that provides only phase shift or phase delay without
appreciably changing the magnitude characteristic. The filter produces a
flat amplitude response. It is useful in custom crossover applications to
compensate for speaker driver deficiencies.
Filter Display A group of nodes plotted on a logarithmic scale. The
PSR1212’s filter display can be accessed through the Inputs 1-8, From
Processing, or To Processing windows.
Filter, High Pass A filter that passes high signal frequencies while
attenuating low frequencies.
Filter, High Shelving Provides boosting or attenuation of frequencies
above a designated frequency. The transition between the spectrum above
and below the designated frequency occurs at a fixed 6dB/octave rate.
Filter, Low Pass A filter that passes low frequencies while attenuating high
frequencies.
Filter, Low Shelving Provides boosting or attenuation of frequencies
below a designated frequency. The transition between the spectrum above
and below the designated frequency occurs at a fixed 6dB/octave rate.
First Mic Priority Increases the audio level required to gate on additional
microphones after the first mic is on.
Gain The amount a signal is increased over a given reference, typically 0.
Normally specified in dB (decibels). On the PSR1212, gain is adjustable
from -65 to 20dB in .5dB increments.
Gain Structure The configuration of parameters which define gain
adjustment of a signal. The optimal input gain setting is one which is
adjusted as high as possible above the noise floor without introducing
clipping.
Gate Ratio Specifies how much louder the microphone audio level must
be above the ambient sound level before a microphone gates on.
GPIO (general purpose input/output) The Control/Status Ports A and B
on the rear of the PSR1212 unit.