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5.7 Audio stream control
Pressing the
(Audio control) button on the main control panel brings up a control
window shown in Figure 19. From here you can control the incoming audio data from the DVS
and outgoing voice audio to the DVS (G723.1compressed to 5.3 K bit per sec).
A Red color square at the left top corner of each audio control button means an Enabled state.
Note:
DVS MIC IN is designed for an electret-foil microphone only, (not dynamic type).
Use a microphone equipped with a stereo male jack.
Volume control for PC Audio
input: LINE IN or MIC IN,
depending on PC input selected
Mute all audio
Volume control for PC
audio output (if enabled)
AGC (Automatic Gain Control) – controls the DVS microphone input. When this feature is
enabled, the MIC sensitivity is changed with the current voice level in the monitoring (i.e.
hearing) area. This is extremely useful for low audio level amplification. It is strongly
recommended not to use this feature with the remote unit audio output. Use AEC to cancel the
echo from the remote speaker to the remote MIC. Since the AGC mode is incompatible with the
MIC IN volume, the slider shown is disabled in Figure 19. It is also incompatible with AEC
mode.
AEC (Acoustic Echo Cancellation) – works only when both DVS in/out audio channels are
enabled. Use this feature to avoid echo from the DVS unit's speaker to the DVS unit's MIC.
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Current status information
Selection PC input type.
(LINE IN / MIC IN)
PC encoding gain
PC decoding gain
Toggle PC MIC or
LINE IN inputs.
Toggle PC Speaker (output)
Figure 19 Audio stream control window
Digimerge Dialup Video Server User's Guide
USING THE CLIENT SOFTWARE
Toggle DVS MIC IN
Toggle DVS
audio output
DVS output volume
Auto gain control
Acoustic Echo Cancellation
DVS MIC IN volume
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