Toshiba PRO L300D Manual Do Utilizador

User’s Manual

4-19

Operating Basics

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.

TOSHIBA Face Recognition uses a face verification library to verify the 
face data of users when they log in to Windows. The user can thus avoid 
having to enter a password or the like, which makes the login process 
easier. This software is preinstalled with some models.

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TOSHIBA Face Recognition does not guarantee the correct 
identification of a user. Changes to the likeness of a registrant, such as 
hair style changes, wearing a cap, or wearing glasses may effect the 
recognition rates when such changes occur after the registrant had 
registered. 

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TOSHIBA Face Recognition may incorrectly recognize faces that are 
similar to a registrant. 

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For high security purposes, TOSHIBA Face Recognition is not a 
suitable substitute for Windows passwords. When security is a high 
priority, use your established Windows passwords to log in. 

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Bright background light and/or shadows may prevent a registrant from 
being recognized correctly. In that case, log in using your Windows 
password. If recognition of a registrant fails repeatedly, refer to your 
computer documentation to learn ways to improve recognition 
performance.

Toshiba does not guarantee that the face recognition utility technology will 
be completely secure or error-free. Toshiba does not guarantee that the 
face recognition utility will accurately screen out unauthorized users at all 
times. Toshiba is not liable for any failure or damage that might arise out of 
the use of the face recognition software or utility.