VOICECRAFTER
TM
TROUBLESHOOTING
23
8.3.3 WIRE SEND AND RECEIVE
LEVELS
Symptom:
•
Distortion on the loudspeaker signal
at high volume far end speech.
Adjustment:
•
Any codec or CLI with nominal audio
levels greater than -20dB (when
used with models VC3000 or
VC3010) or 0dB (when used with
models VC3001 or VC3011) may
require adjustment of Voicecrafter
Codec levels. To accomodate for a
higher transmission level, Codec
Input Gain Offset is decreased and
Codec Output Gain is increased. To
accomodate for a lower transmission
level, Codec Input Gain Offset is
increased, and Codec Output Gain is
decreased.
8.3.4 ACOUSTIC ECHO RETURN
LOSS TARGET (AERL)
The Voicecrafter will train based on a
target AERL setting. The default setting
is 10dB.
Symptoms and Adjustments:
•
Large room where excessive
loudspeaker volume, echo, and/or
distortion are present after training -
increase AERL target, and Train.
•
Small, highly reverberant room
where volume is too low - decrease
AERL target, and Train.
**The AERL target is adjusted by
clicking AERL (ACOUSTIC screen),
and using F2
or F3
to change
settings.
