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STEREO
AUDIO SWITCHER
Product
Description
Digital
audio processors often introduce a time delay into
the transmitted signal of a broadcast station.
This delay creates an audible echo, which
is very distracting to talent monitoring the station
with headphones.
MoniSwitch
is a specialized audio switcher that solves this
echo problem by eliminating the time delay in the
studio monitor system.
MoniSwitch has two stereo inputs and one
stereo output.
One of the inputs receives audio from station’s
off-air demodulator.
The second input is fed with real-time audio,
e.g., the Program bus of the console, the output
of an analog processor, or the “low-delay” Monitor
output from the on-air processor.
The
output of MoniSwitch is fed to the “Air Monitor”
input of the console.
The unit’s Control Input is interfaced to
the console’s “mic tally” output, so that it senses
when the studio mic is in use.
When
the mic is off, the off-air signal is heard through
the monitor system. When the mic is turned on, MoniSwitch
automatically switches to the real-time audio signal,
which is free of echo and other delay artifacts.
Electronic
audio switching is used to create a smooth transition
between the off-air (A) and real-time (B) audio.
LEDs indicate which input is active. Gain trims
for all inputs allow levels to be closely matched.
Any maintained contact closure (or DC voltage)
will switch the unit from the A to the B input.
With no closure, the A input is selected by
default. Audio connections are via barrier strip;
control logic is via mini-TRS jack. |
