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AUTOMATIC MIC MIXING •
REVERBERATION
21
Figure 10. Microphones Pick Up
Direct and Reflected Audio
There are several strategies that can be used to reduce reverberation and noise:
Keep microphones close to the participants.
Only activate those microphones where voice audio is present.
Use directional microphones.
Acoustically treat the room to reduce reverberation and noise.
Eliminate or reduce the source of noise.
The XAP 800 was designed to implement automatic microphone mixing that increases
audio intelligibility by reducing overall multiple microphone pickup of reverberation and
noise. Unlike most automixers, the XAP 800 implements its mixing function completely in
the digital domain. This greatly increases precision in making automixing decisions.
All audio is routed through the XAP 800 (both microphone and speaker audio), which
means the XAP 800 can more accurately make microphone activation decisions.
For example, audio from another source (such as conference audio from another room) is
amplified through the speakers in the room. Typically, an automixer would activate at least
one microphone, as if that audio were a voice in the room. This false activation will not
occur with the XAP 800 (see Figure 11) because the unit can determine that this audio is
coming from the loudspeaker.
Содержание XAP 800
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