When Dolby Digital 3/2/.1 or DTS or DTS-ES signals
are being played, the DPR will automatically switch to
the proper surround mode and no other processing
may be selected. When a Dolby Digital signal with a
3/1/0 or 2/0/0 signal is detected, you may select any
of the Dolby surround modes
When DS-OFF appears as a message
that there is no Dolby Surround data flag in the audio
bitstream. SimilarlyEX-OFF indicates that there
is no Dolby Digital EX data flag
DS-OFF message you may manually select a
Dolby Pro Logic mode to add a multichannel presen-
tation to the stereo material. In the case of the
EX-OFF message when your system is config-
ured for surround back speakers you may manually
select Dolby Digital EX as the processing mode to add
rear surround speakers to the sound field.
It is always a good idea to check the channel data to
make certain that it matches the audio logo informa-
tion shown on the back of a DVD package In some
cases you will see an indication for
when the disc contains a full 5.1, or 3/2/.1, signal.
When this happens check the audio output settings
for your DVD player or the audio menu selections for
the specific disc being played to be sure that the
player is sending the correct signal to the
An UNLOCK message may appear in the Lo
Display Line $ . This is your indication that the digi-
tal audio data stream has been interrupted or is no
longer present. When that occurs
nal processor has no signal to lock onto and is thus
“unlocked. Y
first started until the stream is playing and the proces-
sor determines which mode to apply; or any time the
data stream is stopped or paused, such as when the
menus of some discs are displayed or when the player
is switching between the different sections of a disc
Y
receiver cable set-top or HDTV tuner is in use if the
digital audio is temporarily interrupted when channels
are changed or when a cable box switches from a
channel with a digital data stream to a channel with
analog audio only The UNLOCK message is nor-
mal, and does not indicate any problem with your
receiver Rather it tells you that the incoming data has
simply been paused or is not present for a variety of
possible reasons
PCM Playback
PCM is the abbreviation for Pulse Code Modulation,
which is the type of digital signal used for standard CD
playback, and other non-Dolby Digital and non-DTS
digital sources such as Mini-Disc When a PCM signal
is detected, the Lower Display Line $ will briefly
show a message with the letters PCM, in addition to a
readout of the sampling frequency of the digital signal.
In most cases this will be PCM 44 or
PCM 48kHz, though in the case of specially
mastered, high-resolution audio discs you will see a
PCM 96kHz indication. Note that the sampling rate
displayed is that of the incoming digital signal, and not
the upsampled rate that may be applied to PCM sources
when Dolby Pro Logic Pro Logic II or Pro Logic IIx
processing is applied, as shown on pages 25–26.
During PCM playback you may select any surround
mode except one of the Dolby Digital or DTS/DTS-ES
modes However when a CD with HDCD encoding is
being played you must select the Surround Off (stereo)
mode to take advantage of the HDCD process
HDCD Playback
High Definition Compatible Digital,
®
or HDCD
recorded using a 20-bit encoding and other propri-
etary processing for the ultimate in CD listening. When
an HDCD-encoded disc is playing and the CD
player is connected using a digital connection, the
A
encoding and activate the circuits required for proper
playback, provided that the Surround Off mode is
selected. An HDCD message will appear in the Lo
Display Line $ to confirm the HDCD playback.
HDCD playback is limited to two-channel stereo only
Speaker/Channel Indicators
In addition to the bitstream indicators the
features channel-input indicators that show how many
channels of digital information are being received
and/or whether the digital signal is interrupted.
These indicators are the L/C/R/LFE/SL/SR/SBL/SBR
letters that are inside the center boxes of the
Speaker/Channel Input Indicators @ on the front-
panel. When a standard analog signal is in use
the “L
analog signals
have only left and right channels
Digital signals may have two five six or seven chan-
nels; depending on the program material, its method of
transmission and the way in which it was encoded.
When a digital signal is playing
indicators will light in response to the signal being
received. It is important to note that although Dolby
Digital, for example is referred to as a
not all Dolby Digital DVDs or programs are encoded
for 5.1. Thus
Dolby Digital soundtrack to trigger only the
indicators
NOTE: Many DVD discs are recorded with both “5.1”
and
same soundtrack. When playing a DVD always be
certain to check the type of material on the disc Most
discs show this information using icons on the back of
the disc jacket. When a disc offers multiple soundtrack
choices you may have to make some adjustments to
your DVD player (usually with the
or in a menu screen on the disc) to send a full 5.1
feed to the
Digital or DTS
feed to change during the course of a DVD’s play-
back. In some cases the previews or special material
will be recorded in 2.0 audio while the main feature is
available in 5.1 audio The A
sense changes to the bitstream and channel count
and reflect them in these indicators
The letters used by the Speaker/Channel Input
Indicators @ also flash to indicate when a bitstream
has been interrupted. This will happen when a digital
input source is selected before the playback starts or
when a digital source such as a DVD is paused. The
flashing indicators along with the UNLOCK mes-
sage in the Lower Display Line $ , remind you
that the playback has stopped due to the absence
of a digital signal and not through any fault of the
A This is nor and the digital playback
will resume once the playback is started again.
Night Mode
A special feature of Dolby Digital is the Night mode
which enables specially encoded Dolby Digital input
sources to be played back with full digital intelligibility
while reducing the minimum peak level by 1/4 to 1/3.
This prevents abruptly loud transitions from disturbing
others without reducing the impact of the digital
source The Night mode is available only when Dolby
Digital signals with special data are being played.
The Night mode may be engaged when a Dolby
Digital DVD is playing by pressing the Night Mode
Button T on the remote press the
⁄
/
¤
Navigation Button o to select either the middle
range or full compression versions of the Night
mode T press the
⁄
/
¤
Navigation Button o until the message in the
lower third of the video display and in the Lower
Display Line $ reads D-RANGE OFF .
The Night mode may also be selected to always be on
at either level of compression using the options in the
DOLBY SURR menu. See page 25 for informa-
tion on using the menus to set this option.
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