Yamaha V4.0 DME Designer V4.0 Owners Manual - Page 482

Chapter 6 Component Guide AEC - Acoustic Echo Canceller (MY4-AEC card required) This component is only available when an MY4-AEC Acoustic Echo Canceller is installed in a rearpanel I/O slot of the DME64N/24N. To place the AEC component in a layout, select a DME64N or DME24N device, then select the MY4AEC 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. Remote Local "Hello" + "How's business?" "Hello" DME64N/24N SCENE HOME UTILITY LEVEL MUTE CANCEL ENTER MY4-AEC "How's business" + "Hello" + fan noise "How's business?" Fan noise NOTE In order to reduce acoustic echo originating from the remote location, an echo canceller must be installed and active at the remote location. 482 DME Designer Owner's Manual