Boardroom Installation
A boardroom application is a good example of a situation where microphone mixing and gating become critical to providing seamless dialogue between several people seated around a large table. Figure 7.15 shows a boardroom scenario with eight participants, each with his own microphone and loudspeaker. Also, there are observer seating areas on the periphery of the room with loudspeakers for monitoring the discussion at the table.

A typical PSR1212 installation involves establishing a preset where the chairman’s microphone (mic 1) is given gating and override priorities over the other microphones. Also, whenever a given microphone gates on, audio to that participant’s loudspeaker gates off to prevent feedback, and the volume level of the microphone to adjacent speakers might be reduced below normal output levels, providing a more comfortable audio level. Various parametric equalizers and filters can be configured for particular microphones to enhance the voice qualities of regular participants who sit in assigned seats. All audio is routed to the observation areas at normal levels.

A preset for secondary audio, such as from a VCR or CD player, routes sound to all speakers in the room and gates off microphones as desired. The PSR1212’s parametric equalizers and filters are configured to enhance audio quality.

See the boardroom installation diagram (Figure 7.16).