
Digital Sound Processing
14
DIGITAL SOUND PROCESSING (DSP)
(if fitted)
To improve overall sound quality and the
ability of the audio system to negate the
effects of adverse road and travelling
conditions on audio reception, some vehicles
are fitted with DSP. In addition, DSP
provides ’intelligent’ interaction with other
vehicle equipment, such as the navigation
system and telephone.
Audio quality
Driver adjustable features
Press the audio selection button 6 times to
access the DPS menu. Rotate the volume
control to select the desired option:
’DSP OFF’ - Select to cancel all DPS
features.
’DSP SPATIAL’ - Select to optimise treble
and bass responses, adding width, height
and imaging to the standard audio signal,
to give a more dynamic output for all
occupants of the vehicle.
’DSP DRIVER’ - Concentrates the field of
sound across the width of the vehicle in
the area between the driver and the
windscreen. Select when only the driver is
in the vehicle.
NOTE: After 5 seconds without further
adjustment, the option displayed is selected
and the display reverts to normal.
Automatic features
’Speed dependent volume and sound
equalisation’- The volume and sound
equalisation levels will automatically adjust to
compensate for road noise.
’Speed & volume dependent compression’-
The audio system takes into account road
speed and any quiet audio passages, to
improve volume and sound quality.
’Dynamic headroom management system’-
The audio system monitors both the input
and the output for the amplifier, thereby
optimising its performance to ensure
maximum output with minimal background
’noise’.
Audio interaction
With the audio system switched on, the
digital amplifier is able to prioritise any
output to, or information for, the driver in
order of importance, whilst minimising any
inconvenience to other occupants.
Navigation messages
The audio system output to the front
speakers is muted and the navigation system
uses these speakers to relay messages to the
driver. Audio output to the rear speakers is
unaffected.
Telephone calls
The audio system output to the front
speakers is muted and the telephone call is
received through these speakers. Audio
output to the rear speakers is unaffected.
Navigation messages & telephone calls
If both a navigation message and a telephone
call are received at the same time, audio
system output to all speakers is muted. The
navigation message will be relayed to the
driver through the rear speakers, and the
telephine call will be received through the
front.
If the audio system is not turned on and both
a navigation message and a telephone call
are received at the same time, the
configuration will be as above, but the
volume levels will be as set independently in
the respective navigation and telephone
modes.
NOTE: When the navigation message or
phone call is complete, the audio output
reverts to its previous level
Emergency announcements
If the Radio Data System receives an
emergency announcement, all other audio
output is overridden - including the
navigation system and telephone (see ’Radio
data system (RDS)’). ’ALERT’ appears in the
display for the duration of the
announcement.