User Manual

Chapter 6 Component Guide
DME Designer Owner’s Manual
482
AEC – Acoustic Echo Canceller (MY4-AEC card
required)
This component is only available when an MY4-AEC Acoustic Echo Canceller is installed in a rear-
panel I/O slot of the DME64N/24N.
To place the AEC component in a layout, select a DME64N or DME24N device, then select the MY4-
AEC card via [Select I/O Card] in the “DME Device Properties” dialog box. (Page 218).
How Acoustic Echo and Noise are Reduced
Acoustic echo occurs in a teleconferencing system when the sound from a speaker or reflections from
surfaces of the room are picked up by a microphone and transmitted to the other party, resulting in a
loss of intelligibility. Projectors and air conditioning systems also produce noise that can interfere with
clear teleconferencing. The echo canceling, noise reduction, and feedback suppressor capabilities of
the MY4-AEC help to achieve maximum clarity and intelligibility for smooth, effective communication.
NOTE
In order to reduce acoustic echo originating from the remote location, an echo canceller must be installed and active at the
remote location.
HOME UTILITYSCENE LEVEL MUTE
ENTERCANCEL
“Hello”
Remote Local
“Hello”
“How’s business?”
Fan noise
“How’s business”
+ “Hello”
+ fan noise
“How’s business?”
DME64N/24N
MY4-AEC
+