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Advanced Applications
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4 digital Array Microphones And A SoundStation VTX1000
This example creates a typical audio conferencing system with four digital
microphone arrays, mono program audio, a SoundStation VTX1000, and a
single audio amplifier zone. In this application the VTX1000 will be the analog
telephony interface and can be used to make telephone calls and to control
volume in the local room with the volume adjustment on the VTX1000. The
system operates as follows:
• This VTX1000 volume control will adjust the level of the phone line signal
that is an input to the SoundStructure device and increase level in the local
room.
• The VTX1000 mute button will mute the audio that is transmitted down
the VXT1000’s telephone line so the remote telephony participants won’t
be able to hear the local participants while muted.
• The VTX1000 must be configured for “Vortex” mode to route the
appropriate signals to and from the Aux In and Aux Out connectors on the
VTX1000 power supply.
• The VTX1000’s microphones and loudspeaker are not used in this
configuration.
Digital microphones are used in this example for ease of installation, however
traditional analog microphones could also be used in the system.
The room layout may look similar to the reflected ceiling plan shown in the fol-
lowing figure with in-ceiling loudspeakers, a SoundStation VTX1000 on the
front of the room, and the digital microphone arrays distributed on the table.
POLYCOM
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POLYCOM
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