Toshiba L750D User Manual

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.

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.

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.

The computer’s wireless communication function supports some wireless 

communication devices.
Only some models are equipped with both Wireless LAN and Bluetooth 

functions.