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The Converge Pro 880’s Distributed echo Cancellation places an echo canceller on each mic input for dramatically
improved echo cancellation
(Figure 2.2)
.
In this example, audio from a distant room is sampled. This audio is a reference for each echo canceller on every mic.
When sampled audio (acoustic echo) is detected by the echo canceller, the echo is eliminated.
Sample
A
E
C
A
E
C
A
E
C
A
E
C
A
E
C
A
E
C
A
E
C
= Acoustic echo canceller
Microphone mixer
Echo-cancelled audio to distant room
Acoustic echo
Audio from
distant room
Figure 2.2
NOise CANCeLLATiON
ClearOne’s Converge Pro systems feature a revolutionary new algorithm that actively eliminates background noise within
the vocal range on each mic input. Unlike other noise cancelling devices, Converge Pro does not simply gate audio off
when a mic input drops below a specified level. ClearOne’s noise cancellation actively separates and attenuates ambient
noise from the speech signal, leaving speech audio virtually untouched.
Noise not only interferes with human communication, it hampers system components (i.e., DSPs, amplifier power,
loudspeaker bandwidth), thereby decreasing a system’s responsiveness. by reducing signals not associated with
human speech, Converge Pro ensures the entire system sounds clearer and is much more efficient and responsive.
Converge Pro’s noise canceller is an excellent complement to its acoustic echo canceller. by reducing ambient
noise, which can cause the echo canceller to diverge, it ensures the echo canceller provides the most accurate echo
cancellation.
