User manual BIAMP 8-1683 INPUT

[. . . ] Now, AEC-2HD Input Cards allow each AudiaFLEX installation to have precisely the acoustic echo cancellation needed. [. . . ] Each AEC-2HD Input Card provides two channels of acoustic echo cancellation and background noise reduction, as part of AudiaFLEX hardware. AEC-2HD Input Cards are designed and built using Biamp's proprietary SonaTM AEC algorithm for increased frequency response, improved audio quality, and more natural sound during full-duplex transmission of speech. Additional benefits include greater tolerance for differing signal levels, enhanced intelligibility and fast, easy setup. FEATURES · · · · · d edicatedwide-bandprocessingoneachinput a ssignablereferncepointforeachAECinput s uppressionofstead-statebackgroundnoises o n-boardDSP, doesnotuseAudiaFLEXresources A ECadaptsquicklytochangesinroomacoustics · · · · · A ECstabilityidealforroomcombiningapplications e asytosetup, nocomplicatedtrainingprocedure i ntegratesseamlesslyintoAudiaFLEXsystems RoHS compliance and AES grounding practices c overedbyBiampSystems'five-yearwarranty ARCHITECTS & ENGINEERS SPECIFICATION The acoustic echo cancellation shall be a two-channel input card for AudiaFLEX hardware. Each input channel shall provide dedicated processing, and include an associated reference point. (3. 9kg) AES48-2005 Grounding & EMC practices EU Directive 2002/95/EC, RoHS directive Dynamic Range (20Hz~20kHz, 0dB gain, AEC on/off): Maximum Gain (input channels): Equivalent Input Noise (20Hz~20kHz, 66dB gain, 150 ohm): When placed into an Audia design layout, each AEC Input consists of two separate blocks. An AEC Input Block represents the actual audio input, and an AEC Ref block provides the associated signal reference point. In conferencing applications, AEC Ref blocks should receive "far-end" signal only, and be connected as close as possible to the output, so as to include any signal processing applied for local sound reinforcement of that signal. AEC Ref blocks should never be connected to paths containing signal from corresponding AEC Inputs. In applications where only background noise reduction is desired, AEC can be turned off and no AEC Ref connection is required. [. . . ] Noise Reduction is intended for "stationary" or steady-state background noises, such as HVAC systems, fans, motors, or other mechanical devices. Biamp Systems, 10074 S. W. [. . . ]