Filter
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Glossary
Filter
A device that passes and blocks audio signals based on user-definable
requirements of the system.
• 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 for matching the delay of two processing
channels with different delays.
• High Pass A filter that passes high signal frequencies while attenuating low
frequencies.The gain or loss
• 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.The gain or loss
above the corner frequency is adjustable to +/- 15dB.
• Low Pass A filter that passes low frequencies while attenuating high
frequencies.
• 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.The gain or loss
below the corner frequency is adjustable to +/- 15dB.
Filter Display
A group of nodes plotted on a logarithmic scale.The
XAP 800’s filter display can be accessed through the Inputs 1-8, From Processing,
or To Processing windows.
First Mic Priority
Increases the audio level required to gate on additional
microphones after the first mic is on.This helps ensure that only one mic gates on
when a person speaks.
Flow control
The regulation of the transmission and reception of data.
Flow Screen
The Flow Screen is the main access window for G-Ware features and
unit configuration. It also shows a detailed block diagram of the audio signal—
presenting a graphical explanation of each stage in the signal path.
Gain
The amount a signal is increased over a given reference, typically 0. Normally
specified in dB (decibels). On the XAP 800, gain is adjustable from -65 to 20dB
(85dB range) in .5dB increments.
Gain Structure
The configuration of parameters which define gain adjustment of a
signal.The optimal input gain setting is one which provides both an adequate signal-
to-noise ratio and reasonable headroom.