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To use the Public Address feature:
1.
Connect a line-level microphone signal to one of the channel inputs – this will be called
the “designated PA channel.”
a.
The AudioFetch inputs are not directly compatible with microphones, do not plug
a microphone directly into a channel input.
b.
A line-level signal would normally be available as an output on an existing PA
amplifier/system in a facility.
c.
Alternately, a microphone preamp can be used together with a microphone to
provide a line-level signal – contact AudioFetch support for recommendations.
2.
Adjust the audio gain as previously described, for the designated PA channel
3.
In the PUBLIC ADDRESS section, select the designated PA channel from the drop-down
list
4.
Use a mobile device (preferably with earphones), listen to a different channel on the
AudioFetch system, one that has an active audio source (TV, music, etc.)
5.
Adjust the Detection Speed, Detection Threshold, and Hold Time, until the automatic
interrupt/override occurs as desired.
a.
Experiment with different settings to become familiar with what they do
6.
Click the Save Settings button to save the new settings
In certain applications the AudioFetch system might be used as a permanent PA system, in this
case enable the Force Override Always checkbox (and then click Save Settings button) – this
causes audio from the designated PA channel to be to always stream to all channels.
More about the Public Address settings:
The
Detection Speed
setting helps prevent accidental interrupts (random interruptions to the
audio in all other channels) if the PA microphone picks up occasional noise, gets bumped, etc.
A lower/slower setting means a longer period of sound from the microphone must be detected
before an interrupt occurs – this helps prevent accidental interrupts but it also means there is a
longer delay before the interrupt occurs after a person starts speaking into the PA microphone.
If a lower setting is required for your situation, then personnel making announcements should
be trained to preface their announcement with a word or two to stimulate the slower
detection (example: “Announcement, announcemnent, the facility will be closing in 15
minutes….”).
