Polycom EF2241 manual Configure The Automatic Microphone Mixer, Automixer Parameters

INTEGRATING THE EF2241 INTO YOUR SYSTEM

Figure 12. Matrix page of linked devices

If far end audio and program audio sources are on several Vortex devices.

1.Bus each far end audio and program audio source to each device. Do this by assigning each signal input to either the W, X, Y or Z bus.

2.Assign an echo canceller reference on each device that will include all far end audio and program audio sources.

CONFIGURE THE AUTOMATIC MICROPHONE MIXER

Automixer Parameters

The EF2241 contains two independent automatic microphone mixers. Each input may be assigned to automatic mixer 1, automatic mixer 2, or neither (but not both). Assign all microphones to the same automixer when using all microphones in the same room but in different zones, so that a person does not activate microphones in two different zones (which they would tend to do if each zone had its own automatic mixer). Use both automatic mixers when the EF2241 is split to operate independently between two rooms. One automatic mixer is used in each room. The advantage of having two independent automatic mixers is that when used in two rooms, micro- phone signals in one room do not affect the gating behavior of microphones in the other room. Set an input channel to use neither automatic mixer if an input is not actually a microphone, but is a program audio input. For instance, if you only have 6 microphones and you have an extra stereo program audio source that you want auto- matic gain control (AGC) on and/or noise cancel, you could set its channels to be on neither automatic mixer.

If you have a PC, use the Conference Composer software (See the Conference Com- poser User Guide) to set the automixer parameters. If you would like to set automixer parameters using the LCD menus, see “Automixer Menu” on page 31 for instructions on setting automixer parameters.

The following parameters configure how the EF2241 automatic microphone mixer operates. Parameters include the following: Decay Time, Hold Time, Camera Gating Threshold, Chairman Mode, Chairman Mic, Last Mic On Mode, Last Mic Number,

© Polycom, Inc. 19 VORTEX EF2241 Reference Manual