E-33
E-32
English
Introduction
Your AVR850/AVR550/SR250 receiver provides all the
key decoding and processing modes for analogue and
digital signals, including the latest high definition audio
formats over HDMI.
Modes for digital sources
Digital recordings are usually encoded to include
information about their format type. The AVR850/
AVR550/SR250 detects automatically the relevant
format in a digital signal – such as Dolby Atmos,
TrueHD, Dolby Digital Plus, DTS-HD Master Audio,
Dolby Digital, or DTS – and switches in the appropriate
decoding.
Modes for analogue sources
Analogue recordings do not contain information about
their encoding formats, so the desired mode – such as
Dolby Surround – needs to be selected manually.
Mode memory
Dolby Digital or DTS audio (including the high
definition formats) can be output in two mix modes,
selected using the
MODE
button:
<
Surround (e.g., five main channels plus a subwoofer
for a 5.1 source)
<
Stereo downmix.
Two-channel audio, regardless of whether it is analogue
or digital can also be output in two mix modes, selected
using the mode button:
<
Surround (e.g., Dolby Surround, DTS Neo:6, etc.)
<
Stereo.
The AVR850/AVR550/SR250 stores the settings for
each source. Thus the decoding mode for the following
groups of source material can be stored independently:
<
Dolby Digital (multi-channel) and DTS source
material
<
Two channel Dolby, PCM or Analogue source
material
Two-channel source modes
The following decoding and surround modes are for
creating multi-channel stereo modes from 2-channel
sources. They are available on the AVR850/AVR550 for
standard and high definition Dolby Digital 2.0, DTS 2.0,
PCM or analogue sources:
Stereo –
5/7 Channel Stereo –
Dolby Surround –
DTS Neo:6 Cinema –
DTS Neo:6 Music -
Stereo
In this mode the AVR850/AVR550 works as a
conventional high quality audio amplifier. Note that
if the subwoofer is enabled in stereo mode, then some
processing of the signal is carried out.
<
Stereo Direct:
this achieves the best sound quality if
an analogue connection is present.
<
5/7 Channel Stereo:
this produces an output from
all speakers by copying the left output to all left
speakers and the right output to all right speakers.
The centre speaker outputs a mix of left and right.
Dolby Surround
Dolby Surround allows the AVR850/AVR550 to derive
seven outputs from a two or multi-channel (up to 5.1
with EX) source to take better advantage of all amplifiers
and speakers in your setup.
DTS Neo:6
DTS Neo:6 provides up to six full-band channels of
decoding from stereo material. The AVR850/AVR550
will derive separate channels corresponding to the
standard home theatre layout.
<
Cinema:
A movie mode designed to reproduce a
movie theatre environment. Neo:6 technology allows
various sound elements within a channel or channels
to be steered separately, and in a way which follows
the original presentation naturally.
<
Music:
A music mode designed to produce a lively,
high-integrity surround-effect from most two-
channel music sources from all available speakers.
Neo:6 music mode expands stereo recordings into
the five or six-channel layout without diminishing
the subtlety and integrity of the original stereo
recording.
decoding
modes
Multi-channel source modes
Digital multi-channel source material is normally
provided as ‘5.1 audio’. The ‘5.1 channels’ comprise
of: left, centre and right front speakers, two surround
speakers and a low frequency effects (LFE) channel.
Since the LFE channel is not a full range channel, it is
referred to as ‘.1’.
Surround systems decode and reproduce the 5.1
channels directly. The DTS-ES matrix enhanced
decoding system creates one extra rear channel from
information buried in the two surround signals of
the 5.1 source. The ES enhanced system is sometimes
referred to as a ‘6.1’ system. This extra surround back
channel is normally reproduced through two separate
loudspeakers, creating a ‘7.1’ system.
DTS-ES discrete is a true ‘6.1’ source, with six discretely
encoded channels, plus the ‘.1’ LFE channel.
Dolby Digital Plus, Dolby TrueHD, Dolby Atmos and
DTS-HD are high-resolution surround formats found
on Blu-Ray discs
Decoding modes
The modes given in the following table are available for
multi-channel digital sources.
Special modes such as DTS-ES 6.1 discrete, Dolby
Digital Plus, Dolby TrueHD, Dolby Atmos, and
DTS-HD are only available from the correct source
material.
High resolution audio sources
Dolby Atmos
Dolby Atmos content is mixed as audio objects instead of traditional channels,
so can take full advantage of the number and placement of your speakers.
Dolby TrueHD
Provides up to 7.1 full channels at 96kHz, 24bit resolution, with potentially no
losses in the compression process. Data rates can be up to 18Mbps.
Dolby Digital Plus
Provides up to 7.1 discrete channels of audio with less compression than
traditional Dolby Digital encoding. Data rates can be up to 6Mbps.
DTS-HD Master Audio
Provides up to 7.1 full channels at 96kHz, 24bit resolution, with potentially no
losses in the compression process. Data rates can be up to 24.5Mbps.
DTS:X™
(available by a future update,
check www.arcam.co.uk)
DTS:X is a decoder package that renders immersive content which has been
encoded with DTS:X encoding. DTS:X content consists of audio objects or a
combination of audio channels and objects. The DTS:X decoder package also
plays back legacy DTS formats including DTS-HD Master Audio lossless and
lossy streams.
•
Supports greater than 7.1 channel output configurations (including height speakers)
•
Provides “Dialogue Control” so consumers can adjust the sound to their preference or the
listening environment
•
Remaps any DTS content to any speaker layout
•
Supports Blu-ray Disc (BD), DVD and streaming media formats, and legacy streams up to
192kHz.
•
Includes Neural:X, the latest upmixing/downmixing technology from DTS.
For Dolby Digital sources
Dolby Digital 5.1
Dolby Digital 5.1 sources deliver sound with five discrete full-range channels;
left, centre, right, surround left, surround right, plus LFE channel.
Dolby Digital Stereo Downmix
Provides a stereo downmix of the source material for use with headphones.
Dolby Digital 5.1 + Dolby
Surround
This mode is used to derive information for the individual surround back
channels from the surround channels, using the Dolby Surround decoder.
For DTS sources
DTS 5.1
Less common than the Dolby Digital format, but generally recognised within
the audio industry as being of superior sound quality. DTS 5.1 delivers
surround sound with five full range channels plus an LFE channel.
DTS 5.1 Stereo Downmix
Provides a stereo downmix of the source material for use with headphones.
DTS-ES 6.1 Matrix
This is a 6.1 channel format based on DTS 5.1. It has the sixth channel matrix
encoded into the surround left and surround right channels. The sixth channel
is a surround centre channel and is directed to the surround back left and
surround back right speakers.
DTS-ES 6.1 Discrete
This is a true discrete 6.1 channel sound format. DTS-ES discrete mode
operates only on sources with DTS-ES 6.1 discrete audio encoding.
DTS96/24
Provides up to 5.1 channels of audio at 96kHz, 24bit resolution for superior
sound quality compared to standard DTS 5.1
Summary of Contents for AVR550
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