Bang & Olufsen BeoVision Avant - Technical Sound Guide - Manual (Page 9)

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Setup: Sound: Sound Modes: PRESETNAME: Listening Style
The television has the option of
modifying the audio signal depending
on your listening style. If your primary
activity is listening to the audio signal
(either with or without video), for
example, if you are sitting and listening
to music or watching a movie, then you
should set this setting to ACTIVE
However, if listening to the audio signal
is a secondary activity, for example, in
the case of background music during a
party or dinner, then this option should
be set to PASSIVE
Traditionally, audio systems and most
recordings are designed for ‘active’
listening, with the assumption that the
listener and loudspeakers are positioned
correctly, and that the primary activity
of the user is to listen to the audio
signal. In this situation, each
loudspeaker produces its own dedicated
signal (for example, the left front input
channel is produced by the left front
loudspeaker). This results in the optimal
reproduction of the spatial
characteristics of the recording (for
example, the image locations of the
instruments and voices in the sound
stage).
However, in cases where the listener is
not positioned correctly and the audio is
used as environmental or background
sound, it may be noticed that
instruments’ locations will move into the
loudspeaker that is closest to the
listener. In this case, it may be preferable
to re-distribute audio signals to
different loudspeakers using the
‘Passive’ setting to reduce this effect.
Options: ACTIVE / PASSIVE.
Setup: Sound: Sound Modes: PRESETNAME: Advanced Settings
Selecting this menu item will result in
moving to the Advanced Settings menu
for the current Sound Mode.
Setup: Sound: Sound Modes: PRESETNAME: Reset to Default
Selecting Reset to Default in this menu
will return all settings (Frequency Tilt,
Sound Enhance, Speech Enhance,
Loudness, Bass Management, Balance
L/R, Fader B/F, Dynamics Control,
Listening Style and all Advanced Settings) to their factory default settings
for the current Sound Mode.
Note that other Sound Modes will not
be affected.
Setup: Sound: Sound Modes: PRESETNAME: Advanced Settings: LFE Input
Almost all music produced for
multichannel playback is recorded in 5.0
or 7.0, without an LFE channel. This is
primarily because the LFE channel is
intended for Low Frequency Effects as
the name implies, and there are no such
effects in music.
Frequently, however, you will notice that
in multichannel music releases, whether
on DVD-Audio, SACD or Blu-ray discs,
there is a signal on the LFE channel. This
is, in almost all cases, generated in the
post-production process at the
mastering studio, using a system very
similar to bass-management. In fact, the
only real differences are (1) that the low
frequencies are not removed from the
main channels, and (2) that the bass
extraction is tuned by a mastering
engineer instead of using an automated
process. There are some record labels
who (correctly) choose to not put any
information in the LFE channel. Other
labels use the LFE channel for
alternative purposes (see the ‘LFE Input
to Ceiling‘ option). Consequently, when listening to
multichannel music-only materials, it is
recommendable that the LFE input to
the television be turned off to ensure
that extra unwanted audio does not
bleed into your system. Note that it is
not adequate to switch off your system’s
subwoofer to achieve this effect, since
(unless programmed to do otherwise)
the television’s bass re-direction may re-
route the LFE channel to the smaller
loudspeakers.
Options: ON / OFF.