Digital Audio Playback; Dolby Digital; Dts; Pcm Audio Playback - Harman Kardon AVR 7300 Owner's Manual

Operation
Surround Mode Selector A repeatedly to
scroll through the list of available modes.
Note that the Dolby Digital or DTS modes may
only be selected when a digital input is in use. In
addition, when a digital source is present, the
AVR will automatically select and switch to the
correct mode (Dolby Digital or DTS), regardless of
the mode that has been previously selected. For
more information on selecting digital sources, see
the following section of this manual.
When the 6-Channel/8-Channel direct inputs are
in use there is no surround processing, as these
inputs take the analog output signals from an
optional, external DVD-Audio or SACD player, or
another source device and carry them straight
through to the volume control.
To listen to a program in traditional two-channel
stereo, using the front left and front right
speakers only (plus the subwoofer, if installed and
configured), press the Stereo Button S until
appears in the Main Information
SURR OFF
Display ˜.

Digital Audio Playback

Digital audio is a major advancement over older
analog surround processing systems such as
Dolby Pro Logic. It delivers five or six discrete
channels: left front, center, right front, left sur-
round and right surround and with DTS ES (see
below) even surround back (with identical signals
for left and right). Each channel reproduces full
frequency range (20Hz to 20kHz) and offers dra-
matically improved dynamic range and significant
improvements to signal-to-noise ratios. In addi-
tion, digital systems have the capability to deliver
an additional channel that is specifically devoted
to low-frequency information. This is the ".1"
channel referred to when you see these systems
described as "5.1," "6.1" or "7.1". The bass
channel is separate from the other channels, but
since it is intentionally bandwidth-limited, sound
designers have given it that unique designation.

Dolby Digital

Dolby Digital (originally known as AC-3
a standard part of DVD, and is available on
specially encoded LD discs and satellite broad-
casts and it is a part of the new high-definition
television (HDTV) system.
Note that an optional, external RF demodulator is
required to use the AVR to listen to the Dolby
Digital sound tracks available on laser discs.
Connect the RF output of the LD player to the
demodulator and then connect the digital output
of the demodulator to the Optical or Coaxial
inputs UV*Ó of the AVR. No demodulator
is required for use with DVD players or DTS-
encoded laser discs.

, HDCD

® , High Definition Compatible Digital
States and/or other countries. HDCD System manufactured under license from Pacific Microsonics, Inc.

DTS

DTS is another digital audio system that is capa-
ble of delivering 5.1, 6.1 or 7.1 audio. Although
both DTS and Dolby Digital are digital, they use
different methods of encoding the signals, and
thus they require different decoding circuits to
convert the digital signals back to analog.
DTS-encoded sound tracks are available on select
DVD and LD discs, as well as on special audio-
only DTS CDs. You may use any LD, DVD or CD
player equipped with a digital output to play
DTS-encoded special audio-only CDs with the
AVR, but DTS-LDs can be played on LD players
and DTS-DVDs on DVD players only. All that is
required is to connect the player's digital output
to either the Optical or Coaxial input on the
rear panel UV or front panel *Ó.
In order to listen to DVDs encoded with DTS
sound tracks, the DVD player must be compatible
with the DTS signal as indicated by a DTS logo
on the player's front panel. Note that early DVD
players may not be able to play DTS- encoded
DVDs. This does not indicate a problem with the
AVR, as some players cannot pass the DTS signal
through to the digital outputs. If you are in doubt
as to the capability of your DVD player to handle
DTS DVDs, consult the player's owner's manual.
Please note that some DVD players are shipped
with their output set for Dolby Digital only. To
insure that DTS data is being sent to the AVR,
please check the setup menu system on your
DVD player to make certain that DTS data output
is enabled.

PCM Audio Playback

PCM (Pulse Code Modulation) is the non- com-
pressed digital audio system used for compact
discs, Non-Dolby Digital/DTS Laserdiscs and some
special PCM encoded DVDs. The digital circuits in
the AVR are capable of high quality digital-to-
analog decoding, and they may be connected
directly to the digital audio output of your
CD/DVD or LD player (LD only for PCM or DTS
programs, for Dolby Digital laser discs an RF
adapter is needed, see "Dolby Digital" above).
® ) is
Connections may be made to either the Optical
or Coaxial inputs U V on the rear panel or the
front panel Digital Inputs *Ó.
To listen to a PCM digital source, first select the
input for the desired source (e.g., CD) to feed its
video signal (if any) to the TV monitor and to pro-
vide its analog audio signal for recording. Next
press the Digital Select button Û G and then
buttons E on the remote, or the
use the
⁄ / ¤
Selector buttons 7$ on the front panel, until
the desired choice appears in the Lower Display
Line ˜, then press the Set button @ F to
confirm the choice.
In most cases this will be
the case of specially mastered, high-resolution
audio discs you will see a
® and Pacific Microsonics ™
The
when modes or inputs are changed for analog
sources. In those cases the system is telling you
the sampling frequency used internally at the
output of the analog-to-digital converters that
change the incoming signal from a VCR, tape
deck, the tuner, or other ana-log source to
digital.
During PCM playback the unit automatically will
turn to the default surround mode or to the
LOGIC 7
surround mode except Dolby Digital or DTS.
When an HDCD encoded disc is being played
(see below) and the CD player is connected to
the AVR via a digital connection, select Surround
Off as the Surround mode to enjoy the benefits of
the HDCD process.
HDCD
HDCD, which stands for High Definition Com-
patible Digital
enables the AVR to deliver outstanding digital-to-
analog decoding of PCM signals from any DVD or
CD player, connected to a digital input on the
AVR even when normal, non-HDCD-compatible
players are used (only a digital output is needed).
When a CD with the HDCD recording is played,
the AVR is able to take advantage of the special
recording process that is used in the creation of
HDCD disc. The special circuitry enables audio
with extraordinary fidelity, stunning resolution
and the highest possible overall quality.
As long as a digital input and the pure Stereo
mode (Surround Off) are selected, the AVR will
automatically sense that it is an HDCD recording.
It is important to note that the HDCD process is
completely compatible with standard recordings.
Indeed, the high-quality digital-to-analog
circuitry that is part of HDCD and the HDCD
decoder chip, replacing the monolithic digital
filters used in conventional DACs, will enable
enhanced performance also with normal,
non-HDCD encoded program material.

MP3 Audio Playback

The AVR is one of the few A/V receivers to pro-
vide on-board decoding for the MP3 audio for-
mat used on specific computer audio files and by
portable MP3 players/recorders. In addition, some
new CD and DVD players are capable of playing
back optical discs that are recorded with MP3,
rather than standard CD audio information. By
offering MP3 decoding, the AVR is able to deliver
more precise conversion of the digital signals to
an analog output, along with the
benefits of listening to MP3 audio through the
AVR's high current amplifier and the speakers
from your surround system, rather than the small-
er speakers and low powered amplifiers typically
, though in
4 8 KHZ
used with computers.
indication.
9 6 KHZ
are either registered trademarks or trademarks of Pacific Microsonics, Inc., in the United
indication will also appear
PCM 4 8 KHZ
mode but you also may select any
® , is a sophisticated process that
OPERATION 37