Arcam AVR surround amplifier / AV processor AVR600 - Manual (Page 49)

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English
High resolution audio sources
Dolby True-HD
Provides up to 7.1 full channel 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 channel at 96kHz, 24bit resolution, with potentially no
losses in the compression process. Data rates can be up to 24.5Mbps.
For Dolby Digital sources
Dolby Digital 5.1
The most commonly used sound format for DVD video, and is also the
standard for US television. Dolby Digital 5.1 sources deliver sound with five
discrete full-range channels; left, centre, right, surround left, surround right,
plus a low frequency effects (LFE) channel.
Dolby Digital 5.1 Stereo
Downmix
Provides a stereo downmix of the source material for use with headphones.
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 (unlike DTS-ES Matrix).
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
Post-processing
Dolby Digital EX decoding can be applied to any source if one or two surround speakers are present. Pro Logic IIx
decoding can be applied to any source if two surround back speakers are present.
Dolby Digital EX
This is an extension to Dolby Digital decoding that provides a 6-channel output
from a 5-channel input. The extra channel is the centre-surround channel (for
which the two surround back speakers are used), and is derived from the left
and right surround channel information. This decode mode should be used
only when the source material is ‘Surround EX’ encoded (which is normally
indicated on the disc packaging and should be detected automatically by the
AVR500/AVR600/AV888), but may be used at other times if desired.
Pro Logic IIx Movie This mode is used to derive information for the individual surround back
channels from the surround channels, using the Pro Logic IIx Movie decoder.
Pro Logic IIx Music This mode is used to derive information for the individual surround back
channels from the surround channels, using the Pro Logic IIx Music decoder.
The controls for adjusting Pro Logic IIx Music in ‘General Setup’ can be used in
this mode.
Multichannel source modes
Digital multichannel 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. Dolby Digital EX and DTS-ES matrix
enhanced decoding systems create one extra rear
channel from information buried in the two surround
signals of the 5.1 source. These EX and ES enhanced
systems are sometimes referred to as ‘6.1’ systems. 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 True-HD and DTS-HD are
high-resolution surround formats found on Blu-ray and
HD-DVD discs
decoding modes
The modes given in the following table are available for
multichannel digital sources.
Special modes such as DTS-ES 6.1 discrete, Dolby
Digital Plus, Dolby Tru-HD and DTS-HD are only
available from the correct source material.