Operation Manual

PERATING

THE

EF1210

ASPI Digital - The Sound of DSP Technical Support: 404.892.3200 41

Wideband NC vs.

AEC mode

Having the option to turn the AEC off for wideband noise cancellation is particularly

useful when used in a system that has both conferencing capabilities and sound rein-

forcement. For this system, we suggest programming the remote control device to

turn on the AEC on each channel of the EF1210 if the room is being used for a confer-

ence (when the phone or CODEC is connected). At any other time, program the

remote control device to turn on wideband noise cancellation for sound reinforce-

ment.

Splitting zones

Use EF Panel Control Software to calibrate the EF1210. On Calibration Step 5 when

using more than one zone, associate each microphone input channel with either Ref-

erence A or Reference B. If you are using two reference signals (Reference A and

Reference B), Input Channel 1 must be associated with Reference A (AEC A) and

Input Channel 8 must be associated with Reference B (AEC B). The other 6 micro-

phones can be associated with either reference

Command Description Effects

SR16 Set sample rate to 16

kHz.

The normal operating mode is 16

kHz. In this mode, AEC can be

enabled or disabled.

SR48 Set sample rate to 48

kHz.

The wideband mode (48 kHz) is pro-

vided for applications that require

high-fidelity noise cancellation. In

this mode, AEC is disabled.

SR? Request sample rate. Current sample rate is returned to

remote control device.