Creative SB0100 User Guide - Page 30

Enabling Bass Redirection, Enabling Dolby Digital (AC-3) Decoding

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Enabling Bass Redirection Some subwoofers may not be able to reproduce excessive bass. We recommend that you set the subwoofer volume slider to a low level before you enable bass redirection. Thereafter, increase the volume level to a comfortable level. Dolby Digital delivers five full range channels and one bass-only effects channel. However most multimedia speaker systems have satellite speakers that usually do not reproduce low frequency content. Enabling bass redirection allows low frequency source content from the front, rear and centre channels to be redirected and added to the low frequency source effects (LFE) channel to produce deeper subwoofer output. This feature is useful for producing bass in games or applications that have only front and rear channel content. To enable bass redirection: 1. In the Main deck of the Surround Mixer, click the Speaker button. 2. In the Speaker view, click the Speaker Selection button to select the 5.1 speaker mode if it is not selected. 3. Click the Advanced button. 4. In the dialog box that appears, click the Bass Redirection button. When enabled, the button is orange. Enabling Dolby Digital (AC-3) Decoding By enabling Dolby Digital decoding, the SB Live! card will decode Dolby Digital stream to six discrete analog channels. The Cambridge SoundWorks DeskTop Theater DTT2200 speaker system is an ideal match for this usage. Thus, an external Dolby Digital decoder is not required for you to enjoy multi-speaker surround sound. To enable Dolby Digital (AC-3) decoding: 1. In the Speaker view, clear the Digital Output only check box. 2. Follow the steps 1 to 3 described in the previous section and then click the AC-3 Decode button if it is not yet enabled. However, if you wish to use an external Dolby Digital decoder, do not enable this feature. This setting will pass through compressed Dolby Digital (AC-3) PCM SPDIF output from the Analog/Digital Out jack. Remember to set the SB Live! card to the Digital Output mode. In addition, you will need a separate 3.5mm-to-RCA jack cable to connect to your decoder. Using Sound Blaster Live! Player 5.1 3-5

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Using Sound Blaster Live! Player 5.1
3-5
Enabling Bass Redirection
Dolby Digital delivers five full range channels and one bass-only effects channel. However most
multimedia speaker systems have satellite speakers that usually do not reproduce low frequency
content. Enabling bass redirection allows low frequency source content from the front, rear and
centre channels to be redirected and added to the low frequency source effects (LFE) channel to
produce deeper subwoofer output. This feature is useful for producing bass in games or
applications that have only front and rear channel content. To enable bass redirection:
1.
In the Main deck of the Surround Mixer, click the
Speaker
button.
2.
In the Speaker view, click the
Speaker Selection
button
to select the 5.1 speaker mode if it is not selected.
3.
Click the
Advanced
button.
4.
In the dialog box that appears, click the
Bass Redirection
button. When enabled, the button is orange.
Enabling Dolby Digital
(AC-3) Decoding
By enabling Dolby Digital decoding, the SB Live! card will decode Dolby Digital stream to six
discrete analog channels. The Cambridge SoundWorks DeskTop Theater DTT2200 speaker
system is an ideal match for this usage. Thus, an external Dolby Digital decoder is not required
for you to enjoy multi-speaker surround sound. To enable Dolby Digital (AC-3) decoding:
1.
In the Speaker view, clear the
Digital Output only
check box.
2.
Follow the steps 1 to 3 described in the previous section and then click the
AC-3 Decode
button if it is not yet enabled.
However, if you wish to use an external Dolby Digital decoder, do not enable this feature. This
setting will pass through compressed Dolby Digital (AC-3) PCM SPDIF output from the
Analog/Digital Out jack. Remember to set the SB Live! card to the
Digital Output
mode. In
addition, you will need a separate 3.5mm-to-RCA jack cable to connect to your decoder.
Some subwoofers may not be able
to reproduce excessive bass. We
recommend that you set the
subwoofer volume slider to a low
level before you enable bass
redirection. Thereafter, increase
the volume level to a comfortable
level.