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User’s Manual 4-31
L630/L635
Dolby Advanced Audio
®
(optional)
Dolby Advanced Audio provides stunning personal surround sound from
anypair of speakers or headphones. Ideal when using surround sound
speakers is not practical, Dolby Advanced Audio enables an enveloping
entertainment experience.
Dolby Advanced Audio technologies:
■ Dolby Headphone - Personal surround sound using any set of
headphones so that listeners feel like the action is happening all around
them.
■ Audio Optimization - Corrects the frequency response problems
commonly associated with laptop computers.
■ High Frequency Enhancer - High Frequency Enhancer synthesizes
and boosts high frequencies on any speaker.
■ Natural Bass - Extends the bass response of any speakers by up to an
octave.
To open the user interface of Dolby Advanced Audio, steps as detailed
below:
1. Click the right button of a mouse on the speaker icon on the Windows
Taskbar, and select Playback Devices in the sub menu.
2. On the Playback tab, select Speakers, and click Properties.
3. Click the Dolby tab.
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.