2.2.2 Digital audio input
When the HCS-3900M/20 main unit is connected to the computer, the digital audio can be input. Using the recording
software or the third party communication software, such as recorder, Skype or QQ and so on, functions like recording,
remote instruction, remote communication can be implemented.
Please adjust and test the HCS-3900M USB Audio to a suitable volume when first using. Adjust method: open the control
panel-sound (or right click the volume icon on the taskbar and select sound), and select the Microphone (HCS-3900M
USB Audio) and modify its setting on the Recording dialog box. Shown as in the following figure:
Figurer2.10: Adjusting microphone volume
Note:
Too high volume may lead to distortion, so user can confirm a suitable volume through recording and playback when
necessary;
In “Microphone Properties- Listen”, please disable “Listen to this device” (HCS-3900M USB Audio) to avoid have
echo.
Please select the HCS-3900M USB Audio as the current device on recording or communication. Usually,
HCS-3900M USB Audio will be activated instead of the default sound card after connecting to the computer. If there
is something wrong in recording, may be the sound card selection made a mistake, please select the sound card
manually.
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