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User’s Manual 4-29
Operating Basics
To access Dolby Advanced Audio function, follow the steps as detailed
below:
1. Right-click on the speaker icon on the Taskbar, and select Playback
Devices from the sub menu.
2. Select Speakers, and click Properties.
3. Click the Dolby tab.
Adjusting Microphone Level
Follow the steps below to change the microphone recording level.
1. Right-click on the speaker icon on the Taskbar, and select Recording
devices from the sub menu.
2. Select Microphone, and click Properties.
3. On the Levels tab move the Microphone slider to increase or decrease
the microphone volume level.
If you feel the microphone volume level is inadequate, move the
Microphone Boost slider to a higher level.
Notes on Using the Microphone
You can use the built-in or an external microphone that connects to the
microphone jack to record monaural sounds into your applications. It can
also be used to issue voice commands to applications that support such
functions (built-in microphone is provided with some models).
Since your computer has a microphone and speaker, "feedback" may be
heard under certain conditions. Feedback occurs when sound from the
speaker is picked up in the microphone and amplified back to the speaker,
which amplifies it again to the microphone.
This feedback occurs repeatedly and causes a very loud, high-pitched
noise. It is a common phenomenon that occurs in any sound system when
the microphone input is output to the speaker (throughput) and the speaker
volume is too loud or too close to the microphone. You can control
throughput by adjusting the volume of your speaker or through the Mute
function in the Master Volume panel. Refer to your Windows documentation
for details on using the Master Volume panel.