Surround Mode Post Processing - Harman Kardon AVR 145 Owner's Manual

30935_AVR145_ENG 01/12/06
Operation
The middle number indicates how many discrete
surround channel signals are present.
• A 2 tells you that separate surround left and
right signals are available. This will be displayed
for Dolby Digital 5.1 and DTS 5.1 programs.
• A 1 tells you that there is only a single, surround
encoded surround channel. This will appear for
Dolby Digital bit streams that have matrix
encoding.
• A 0 indicates that there is no surround channel
information. This will be displayed for two-
channel stereo programs.
The last number indicates if there is a discrete Low
Frequency Effects (LFE) channel. This is the ".1" in
the common abbreviation of "5.1" sound and it is
a special channel that contains only bass
frequencies.
• A .1 tells you that an LFE channel is present.
This will be displayed for Dolby Digital 5.1 and
DTS 5.1 programs, as available.
• A 0 indicates that there is no LFE channel infor-
mation available. However, even when there is
no dedicated LFE channel, low frequency sound
will be present at the subwoofer output when
the speaker configuration is set to show the
presence of subwoofer.
For incoming Dolby Digital signals, the following modes are available:
Incoming Bitstream
Dolby Digital 1/0/.0 or 1/0/.1 Dolby Digital, Dolby Digital Stereo, Dolby Virtual Speaker Reference (2 Speaker), Dolby Virtual Speaker Wide (2 Speaker)
Dolby Digital 2/0/.0 or 2/0/.1 Dolby Pro Logic II (Movie, Music or Game), Dolby Pro Logic, Dolby Digital, Dolby Virtual Speaker Reference (2 or 3 Speaker),
Dolby Digital 3/0/.0 or 3/0/.1 Dolby Digital, Dolby Digital Stereo, Dolby Virtual Speaker Reference (2 or 3 Speaker), Dolby Virtual
Dolby Digital 2/1/.0 or 2/1/.1 Dolby Digital, Dolby Digital Stereo, Dolby Virtual Speaker Reference (2 or 3 Speaker), Dolby Virtual
Dolby Digital 2/2/.0 or 2/2/.1 Dolby Digital, Dolby Digital Stereo, Dolby Virtual Speaker Reference (2 Speaker), Dolby Virtual
Dolby Digital 3/2/.0, 3/2/.1
9:53 Side 33
An
UNLOCK
Lower Display Line Ò. This is your indication
that the digital audio data stream has been inter-
rupted or is no longer present. When that occurs,
the unit's digital signal processor has no signal to
lock onto, and is thus "unlocked." You may see
this message when a DVD is first started until the
stream is playing and the processor 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. You may also see the message when a
satellite 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
message is normal, and does not
UNLOCK
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.
When Dolby Digital 3/2/.1 or DTS 3/2/.1 signals
are being played, the AVR 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 sur-
round modes.
Available Surround Modes
Dolby Virtual Speaker Wide (2, 3, 4 or 5 Speaker)
Speaker Wide (2 or 3 Speaker)
Speaker Wide (2, 3, 4 or 5 Speaker)
Speaker Wide (2 or 4 Speaker)
Dolby Digital, Dolby Digital Stereo, Dolby Virtual Speaker Reference (2 or 3 Speaker), Dolby Virtual
Speaker Wide (2, 3, 4 or 5 Speaker)
message may appear in the

Surround Mode Post Processing

Thanks to the power of the AVR 145's DSP
processor, a variety of surround mode options are
available for most digital signals to deliver either
the native information or to produce an
enhanced sound field to match the number of
speakers in your system. The modes available and
the number of channels available for each mode
will vary depending on the incoming bitstream,
and the configuration of your system, and are
listed in the tables below. The modes may be
selected in the usual manner by selecting the
major Surround Mode Group first, and then
scrolling through the options.
The incoming bitstreams are indicated in the
Lower Display Line Ò as described above.
After you have selected a surround mode, after
about 5 seconds, the bitstream will be displayed
briefly before the unit returns to normal opera-
tion. Therefore, you may ascertain the current bit-
stream simply by pressing the button for the
major Surround Mode Group and waiting for a
few moments for the bitstream to appear in the
Lower Display Line Ò. The bitstream informa-
tion will also be displayed after the source input
has been changed.
To use the table below, match the indication in
the display to the Incoming Bitstream listed in the
left column. The available surround modes are
shown to the right.
OPERATION 33