Decoding Modes - Arcam HDA AV41 Handbook

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, Auro 3D, 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
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 Receiver for standard and high definition
Dolby Digital 2.0, DTS 2.0, PCM or analogue sources:
Stereo –
16 Channel Stereo –
Dolby Surround –
Dolby Virtual Height -
DTS Neural:X -
DTS Virtual:X -
Auro-matic 3D (AVR11, AVR21, AVR31, AV41)
Stereo
In this mode the Receiver 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 most direct signal
path if an analogue connection is present.
16 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 Receiver to derive up to
16 outputs from a two or multi-channel source to take better
advantage of all amplifiers and speakers in your setup.
Dolby Virtual Height
Dolby Virtual Height 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.
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.
Auro-matic 3D (AVR11, AVR21, AVR31,
AV41)
Auro-matic 3D creates an immersive audio experience
by creating additonal channels from the incoming audio
to match the available output channels, enhancing the
listening expereince.
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, Auro 3D 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, Auro 3D are only available from the correct
source material.
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