Commend SIP Series
Appendix
2.0/0612
63
Possible Consequences of to High Volume
In this section the assumption “louder
≠
better” is described.
If the volume level (“speaker volume”) is increased by several dB, counteractive measures may be
required to ensure a echo-free conversation at the station:
It is possible to decrease the microphone sensitivity (“
Mic Sensitivity
”) and /or
the Echo Canceller, i.e. the “
Echo Suppression
”-level is increased
Note:
The standard audio settings (
see page 45
) are well-proven values and are suitable for a large part of all
applications.
SIP
0
#
*
Reception
Office
Garage
Reception
Office
Garage
Reception
Office
Garage
Configuration
is carried out
at this station
Effects
of
configuration
audible at
conversation
partner
Echo
audible
at this station
during
conversation
Configuration
has to be
carried out at
conversation
partner
Example 1:
Example 2:
Echo
Echo
Echo
Echo
Counteractive
Measures
Too much Echo
lower
“Mic Sensitivity”
Consequence:
Speaker must
be closer to
microphone or
speak louder
higher
“Echo Suppression”
Consequence:
The conversation
might feel more
like with switched
duplex/half duplex