Toshiba C650 用户手册

User’s Manual

4-20

Operating Basics

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.

Wireless communications

The computer’s wireless communication function supports some wireless

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

functions.

■

Do not use the Wireless LAN (Wi-Fi) or Bluetooth functionalities near a

microwave oven or in areas subject to radio interference or magnetic

fields. Interference from a microwave oven or other source can disrupt

Wi-Fi or Bluetooth operation.

■

Turn all wireless functionalities off when near a person who may have a

cardiac pacemaker implant or other medical electric device. Radio

waves may affect pacemaker or medical device operation, possibly

resulting in serious injury. Follow the instruction of your medical device

when using any wireless functionality.

■

Always turn off wireless functionality if the computer is near automatic

control equipment or appliances such as automatic doors or fire

detectors. Radio waves can cause malfunction of such equipment,

possibly resulting in serious injury.

■

It may not be possible to make a network connection to a specified

network name using the ad hoc network function.

If this occurs, the new network(*) will have to be configured for all

computers connected to the same network in order to re-enable

network connections.

* Please be sure to use new network name.