Operation Manual
E-35E-34
English
High resolution audio sources
Dolby TrueHD 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 e most commonly used sound format for DVD video, and is also the
standard for US television. Dolby Digital 5.1 sources deliver sound with ve
discrete full-range channels; le, centre, right, surround le, surround right,
plus a low frequency eects (LFE) channel.
Dolby Digital 5.1 Stereo
Downmix
Provides a stereo downmix of the source material for use with headphones.
Dolby Digital EX is is an extension to Dolby Digital decoding that provides a 6-channel output
from a 5-channel input. e extra channel is the centre-surround channel (for
which the two surround back speakers are used), and is derived from the le
and right surround channel information. is 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
AV950/AVR750/450/380), but may be used at other times if desired.
Dolby Digital 5.1 + Pro Logic
IIx Movie
is mode is used to derive information for the individual surround back
channels from the surround channels, using the Pro Logic IIx Movie decoder.
Dolby Digital 5.1 + Pro Logic
IIx Music
is mode is used to derive information for the individual surround back
channels from the surround channels, using the Pro Logic IIx Music decoder.
e controls for adjusting Pro Logic IIx Music in ‘General Setup’ can be used in
this mode.
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 ve 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 is is a 6.1 channel format based on DTS 5.1. It has the sixth channel matrix
encoded into the surround le and surround right channels. e sixth channel
is a surround centre channel and is directed to the surround back le and
surround back right speakers.
DTS-ES 6.1 Discrete is 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
Neo:6 music mode expands stereo recordings into
the ve or six-channel layout without diminishing
the subtlety and integrity of the original stereo
recording.
Multi-channel source modes
Digital multi-channel source material is normally
provided as ‘5.1 audio’. e ‘5.1 channels’ comprise
of: le, centre and right front speakers, two surround
speakers and a low frequency eects (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. ese EX and ES enhanced
systems are sometimes referred to as ‘6.1’ systems. is
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 and DTS-HD are
high-resolution surround formats found on Blu-Ray
discs
Decoding modes
e 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 and DTS-HD are only
available from the correct source material.
Dolby volume
Dolby Volume is a sophisticated
new technology that resolves the
problem of dierent volume levels
between programme content (e.g. a TV show and advert
breaks) and between sources (e.g. a rock radio station
and DVD, or between two TV stations). It lets the
listener enjoy everything at the same preferred listening
level without having to reach for the volume control to
compensate for the dierent recording/output levels.
is is the Volume Leveller function of Dolby Volume.
Dolby Volume also works in conjunction with the
AV950/AVR750/450/380 volume control setting to
compensate for the ear’s changing sensitivity at dierent
frequencies depending on how loud the audio is. It
is based on a model of how human hearing works. It
properly balances low, mid and high frequencies to
maintain all the nuances and impact of the original
audio regardless of the actual selected playback volume
level. is is the Volume Modeller function of Dolby
Volume.
Dolby Volume measures, analyses and maintains volume
levels based on how people perceive sound. A variety of
audio parameters are monitored including spectral- and
time-based loudness to ensure that perceived dynamics,
timbre and bass performance remain consistent at all
volume levels.
Dolby Volume also lets the listener control a
programme’s dynamic range – the range between loud
and quiet sounds. For example, with the volume turned
down for late-night viewing, dynamic range can be
adjusted so that speech remains clear and loud eects or
music passages retain their impact without waking up
the family.
Settings
Dolby Volume can be applied to any analogue or digital
stereo source or any digital multi-channel source. It is
not available in Stereo Direct or on the analogue multi-
channel input. Dolby Volume can even be applied to
processing of stereo signals (e.g. PLII Music) or when
down-mixing a digital multi-channel source (e.g. Dolby
Digital 5.1 down to stereo).
Dolby Volume can be enabled and congured separately
for each audio input in the Input Cong menu. e
default is ‘O ’ for ‘audiophile’ listening. You may wish
to turn Dolby Volume ‘On’ for TV and movie sources
to maintain the same perceived overall listening level
between sources and frequency response regardless of
the volume setting. Most of the controlling parameters
of Dolby Volume are automatic as they are dependent
on analysis of the audio signal and the volume setting
of the AV950/AVR750/450/380. However, the Volume
Leveller and Calibration Oset controls (see below) can
be adjusted to your preference.
Volume Leveller
e Volume Leveller function of Dolby Volume controls
how closely quiet and loud sources and programme
content are matched to each other, based on the
ear’s perception of loudness. e range of values is 0
(minimal levelling) to 10 (maximum levelling). e
default setting is 2. If the Volume Leveller function
is turned o, no level matching between sources and
programme material is performed. is is not the
same as turning Dolby Volume o as volume related
frequency response processing is still active.
When Dolby Volume is being applied to the current
input, a Dolby Volume processing mode indicator is
shown on the OSD and the front panel display.
Calibration Offset
e Calibration Oset parameter of Dolby Volume
allowsyoutocompensateforspeakerecienciesand
listening position – eectively moving the reference
listening level up or down the volume scale. e default
value is 0 and this should normally produce a good
result when the AV950/AVR750/450/380 speaker levels
are set using a sound pressure level meter at the listening
position (75dB SPL, ‘C’ weighting, slow response).