Sound Gain And Volume Adjusting - Beward DS03M Operation User's Manual

NOTE!
The names of options in the OS menus may differ from the ones mentioned above.
2. Some features of functionality of the door station can be effectively used to reduce the echo
feedback effect on the Client side (PC speakers). In the Web User Interface menu go to Config –
Audio Settings – Audio Parameters and change the compression type to «G.726». This echo
cancellation method has one disadvantage that consists in some decrease of sound quality and its
volume level because of limitations of the G.726 codec.

14.2. Sound Gain and Volume Adjusting

1. If the Client can't hear the Guest well or his voice is interrupted, or if the Guest hears his
echo, then change your operating system settings as follows:

go to Control Panel – Sound – Recording, double-click the recording device set by
default (microphone) and reduce microphone boost level and volume level (if necessary)
on the Levels tab. It is recommended to set microphone boost level to 0 dB, volume level
to 100. It is also necessary to ensure that the "Listen to this device" option is disabled on
the Listen tab.

reduce volume level of the PC speakers to the minimal appropriate level. If it is too high,
then the microphone may receive the audio waves from the speakers and, therefore, the
Guest may hear his echo as well as the Client may hear the Guest with interrupts.

place the PC microphone farther from the speakers and closer to Client's face.
Moreover, you can adjust the gain of sound transmitted from the door station microphone to
the PC speakers in the Web User Interface. Go to Config – Audio Settings – Audio Parameter and
change the "Input Volume" parameter to the appropriate value. The lower "Input Volume" value, the
quieter Guest's voice and his echo, and vice versa.
2. If the Guest can't hear the Client well or his voice is interrupted, then change your operating
system settings as follows:

go to Control Panel – Sound – Recording, double-click the recording device set by
default (microphone) and increase microphone boost level on the Levels tab. Then, set
appropriate volume level. It is recommended to set microphone boost level to 0 dB, volume
level to 100. Values of the parameters may vary depending on the PC microphone type.

ensure that the "Listen to this device" option is disabled on the Listen tab.

reduce volume level of the PC speakers to the minimal appropriate level.
Moreover, you can adjust the gain of sound transmitted from the PC microphone to the door
station speaker in the Web User Interface. Go to Config – Audio Settings – Audio Parameter and
change the "Output Volume" parameter to the appropriate value. The lower "Output Volume" value,
the quieter Client's voice and his echo, and vice versa.
IP Video Door Station DS03M(P) Operation User Manual
Chapter 14. Recommendations on Setting and Operation of DS03M(P)
53