O
PERATING
B
ASICS
4-21
Using the microphone
Your computer has a built-in microphone that can be used to record monaural
sounds into your applications. It can also be used to issue voice commands to
applications that support such functions.
Since your computer has a built-in microphone and speaker, “howling” may be
heard under certain conditions. Howling 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 howling 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.
To adjust the volume or activate Mute, click start, point to All Programs, point to
Accessories, point to Entertainment and click Volume Control. In the
Master Volume panel, you can use the slide bars to adjust the volume level or
click Mute at the bottom of the panel.
Modem
This section describes how to connect and disconnect the internal modem to and
from a telephone jack.
NOTE: The internal modem does not support voice functions. All data
and fax functions are supported.
CAUTIONS: 1. In case of a lightning storm, unplug the modem cable
from the telephone jack.
2. Do not connect the modem to a digital telephone line.
A digital line will damage the modem.

Region selection

Telecommunication regulations vary from one region to another, so you will need to
make sure the internal modem’s settings are correct for the region in which it will be
used.
To select a region, follow the steps below.

Using the microphone