Decoding Modes - Arcam AV860 Manuel

decoding
modes
Introduction
Your Receiver 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 Receiver
detects automatically the relevant format in a digital
signal – such as Dolby Atmos, TrueHD, Dolby Digital
Plus, DTS:X, 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 Neural:X, etc.)
<
Stereo.
The Receiver 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 AV860/AVR850/
AVR550/AVR390 for standard and high definition
Dolby Digital 2.0, DTS 2.0, PCM or analogue sources:
Stereo –
5/7 Channel Stereo –
Dolby Surround –
DTS Neural:X -
DTS Virtual:X -
Stereo
In this mode the AV860/AVR850/AVR550/AVR390
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 AV860/AVR850/AVR550/
AVR390 to derive up to 7.1.4 outputs from a two or
multi-channel source to take better advantage of all
amplifiers and speakers in your setup.
DTS Neural:X
DTS Neural:X is an advanced up-mixer that renders up
to 7.1.4 channels of immersive audio from nearly any
lower channel count content.
DTS Virtual:X
DTS Virtual:X creates an immersive audio experience
by virtualising height content over traditional speaker
configurations without the need for height speakers.
Note - this mode is NOT available if height speakers are
selected.
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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,
DTS:X, 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, DTS:X,
DTS-HD and IMAX® ENHANCED are only available
from the correct source material.