Toshiba Portege 7140 - Manual (Page 57)

User's Manual Operating Basics 4-3
Version
5
Last Saved on 20/12/99 04:11
Portege 7140CT User's Manual – 7140_UK.doc – ENGLISH – Printed on 20/12/99 as IM_714UK
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, “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.
To adjust the volume or activate Mute, click the Start button, point to
Programs
, point to Accessories, point to Multimedia and click
Volume Control
. In the Volume Control panel, you can use the slide
bars to adjust the volume level or click Mute at the bottom of the panel.
International modem
Read this section for directions on connecting the modem. Refer to the
online help files for the international modem and RingCentral for details
on operation of your modem and modem software.
The international modem does not support the voice functions described in the
Ring Central’s online help files. All data and fax functions are supported.
In case of a lightning storm, unplug the modem cable from the telephone
jack.
Do not connect the modem to a digital telephone line. A digital line will
damage the modem.