Toshiba PSM40C-JM300E User Manual - Page 99
Using the microphone, Modem, Region selection
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Operating Basics 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 in the Master Volume panel. Refer to your Windows documentation for details on using the Master Volume panel. Modem This section describes how to connect and disconnect the internal modem to and from a telephone jack. The internal modem does not support voice functions. All data and fax functions are supported. In case of a lightning storm, unplug the modem cable (optional) from the telephone jack. 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. 1. In Windows XP, click start, point to All Programs, point to TOSHIBA, point to Networking and click Region Select Utility. Do not use the Country/Region Select function in the Modem setup utility in the Control Panel if the function is available. If you change the Country/ Region in the Control Panel, the change may not take effect. 2. The Region Selection icon will appear in the Windows Task Bar. 3. Click the icon with the primary mouse button to display a list of regions that the modem supports. A sub menu for telephony location information will also be displayed. A check will appear next to the currently selected region and telephony location. User's Manual 4-26