Chapter 2 - Technical Information
© Polycom, Inc. 17
The following table gives information about audio features. The following table gives information about the microphone pods supplied with the ViewStation EX, ViewStation FX, and VS4000 systems.
Table 2-9. Audio Features
Parameter Value/format
Audio codecsa
a. The protocol used depends on the protocols supported by the
opposite endpoint and on the line rate. Audio protocol is selected
automatically to provide optimum audio clarity.
G.711, G.722, G.722.1b, G.728
b. Provides enhanced frame loss compensation.
Mode Full duplex
Gain control Automatic
Noise suppression Automatic
Echo cancellation Instant adaptation
Table 2-10. Microphone Pods
Parameter Value/description
Pick-up elements 3 hypercardioid pressure-zone microphones
Coverage 360°
Placement Minimum 6 ft (1.8 m) from speakers
Minimum 15 ft (4.6 m) from any other microphone