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CHAPTER 1: Introduction
Congratulations on purchasing the XAP™ 400 Audio Conferencing System. The
XAP 400 combines a highly advanced eight-by-eight digital matrix mixer that
features Gentner
®
Distributed Echo Cancellation
®
, noise cancellation, and audio
processing with a single-line digital telephone hybrid. This combination provides the
highest quality audio for a variety of audio and video conferencing applications—all
in a single one-rack unit.
• Gentner Distributed Echo Cancellation—four microphone/line echo
cancellers remove echo in even the most difficult environments.
• EC Reference summing enables the XAP 400 to reference various signals for
an echo cancellation reference without requiring a dedicated output.
• Noise cancellation reduces background noise such as that caused by fans or
air conditioning.
• Four independent processing blocks, each with 15 filters, delay, and
compressors, provide pinpoint audio configuration.
• Four mic/line inputs, four line inputs, and eight outputs.
• Enhanced expansion bus provides network capabilities. Eight XAP 400s or
XAP 800s can be networked for up to 64 microphone inputs.
• Fully configurable matrix which allows you to route any input to any output
or combination of outputs.
• Front panel control of mute and gain on inputs and outputs.
• Safety mute button on the toolbar that mutes all outputs if feedback occurs
during the configuration process.
• ClearOne’s 100% digital signal processing (DSP) technology ensures
crystal-clear audio with the deepest, most reliable hybrid null.
• International configuration of telephone hybrid setting
• Built-in telephone interface with:
~ Telco noise cancellation
~ Touch-tone dialing capability (40 character dial string)
~ Full-time telco echo cancellation with 31 millisecond tail time
CHAPTER 1: Introduction
Features