Audio Processing Setup - CAMBRIDGE CXU User Manual

Audio processing setup

CXU Setup Menu
Playback Setup Speaker Configuration
Video Setup Crossover
Audio Format Setup
Dynamic Range Control
Audio Processing DTS Neo:6 Mode
Device Setup Output Volume
Network Setup A/V Sync
Exit
Configure speaker arrangement and settings
for optimal analog audio output
The "Audio Processing" section of the Setup Menu system allows you to
configure how the player will process audio signals before sending them to
the analogue outputs. The DRC control also affects the HDMI outputs.
Speaker configuration (7.1 channel
analogue audio output only)
The following settings determine how the CXU's internal surround-sound
decoder operates. They do not affect audio transmitted over HDMI or S/P
DIF/TOSlink.
In the Speaker Configuration menu you can configure speaker settings
such as down-mix mode, number of speakers, their distance, size and trim
level. The Speaker Configuration menu shows an illustration of the speaker
placements to assist you on properly configuring the speaker parameters.
Upon entering this menu, the cursor is positioned on the front left speaker.
You may use the / buttons to move the cursor. The  button moves
the cursor in clockwise sequence, and the  button moves the cursor in
counterclockwise sequence.
When the cursor is over the "Down Mix" or "Exit" options, you can also use
the / buttons to highlight these options.
Down mix mode
Down mix is the process of converting multi-channel audio to a lesser number
of channels. For example, converting a 5.1ch source to stereo or converting
a 7.1ch source to 5.1ch. Down mixing allows the audio output from the
player to match the exact number of speakers available in your home theatre
system.
The current down mix mode is displayed in the lower right corner of the
speaker placement illustration.
To change the audio down mix setting, press the Enter button while the
cursor is over the "Down Mix" option. The following down mix modes are
available:
28
80Hz
Auto
Off
Variable
0
Exit
LT/RT – Left Total / Right Total. The Center and surround channels are
decoded and then Matrix encoded into the two front channels. A Dolby Pro
Logic receiver can then decode the two channel audio that is output back
into surround audio.
Stereo - This mode down-mixes multi-channel audio to 2-channel stereo
output. For original stereo content the output will not change. For original
multi-channel content the surround and Center channels will be mixed with
the left and right front channels. Recommended for use with TV sets or stereo
receiver/amplifiers (without Pro Logic decoding).
5.1Ch – This mode enables 5.1ch decoded audio output. The number of
actual output channels depends on the disc. If the source content has
more channels, the surround back channels will be mixed into the surround
channels.
7.1Ch – This mode enables 7.1ch decoded audio output. The number of
actual output channels depends on the disc.
Test tone
Test tones are artificially-created sounds that are used to test your audio
speaker system and help to identify any wiring faults. By default the Test
Tone is set to "Off", with the status is displayed in the lower left corner of
the screen.
To begin the test, press the / buttons to highlight the "Test Tone" option,
press the Enter button to change the test tone status to "On". Then use the
Navigational buttons to select a speaker, you will hear the test sounds. To
stop the test process, press / buttons to highlight the "Test Tone" option
and press the Enter button to switch the status back to "Off". Please note
these test tones only apply on multi-channel audio outputs.
Speaker settings
For each speaker in the home theatre system, you can set its size, distance
and trim level. To configure a speaker, move the cursor to highlight the
speaker and press the Enter button. The Speaker Settings menu on the
right side of the screen will be activated. In the Speaker Settings menu, use
the / buttons to select a parameter, and then press the Enter button
to change it. To exit the Speaker Settings menu and return to the Speaker
Configuration illustration, press the  button or select the "Exit" option.
You can also move on to configure the next speaker by selecting the "Next
Speaker" option.
The following speaker parameters can be configured:
1. Size
The speaker size parameter sets bass filtering control for the speakers. The
bass frequency is set in the "Crossover Frequency" option of the "Audio
Processing" section of the Setup menu:
Large – Bass frequencies are passed to the speakers.
Small – Bass frequencies are not passed to the speakers to reduce possible
distortion. If a subwoofer is available, bass frequencies are redirected to a
subwoofer.
Off – Speaker for the corresponding position does not exist. Audio for the
missing speaker is redirected to other speakers or discarded if redirection
is not possible.
On (for subwoofer only) – Specify that a subwoofer is available.
Note: The front, surround and surround back speakers are configured as
pairs. Changes to the size of one speaker will automatically change the other
speaker of the pair.