Sony TA-AV571 User Manual

16

Sound that consists of three elements:  direct
sound, early reflected sound (early
reflections) and reverberative sound
(reverberation). The acoustics where you hear
the sound affect the way these three sound
elements are heard. These sound elements are
combined in such a way that you can actually
feel the size and the type of a concert hall.

Signal given out by the amplifier for
adjusting the speaker volume. The test tone
will come out as follows:

The test tone is output from the front L
(left), center, front R (right), and rear
speakers in succession.

The test tone is output from the front and
the rear speakers alternately.

Setting of speakers to enhance Dolby Pro
Logic Surround mode. To obtain the best
possible surround sound, select one of the
following four center modes according to
your speaker system.

Select NORMAL mode if you have front

and rear speakers and a small center
speaker. Since a small speaker cannot
produce enough bass, the bass sound of
the center channel is output from the front
speakers.

Select WIDE mode if you have front and

rear speakers and a large center speaker.
With the WIDE mode, you can take full
advantage of Dolby Surround sound.

Select 3 CH mode if you have front and

center speakers but no rear speaker. The
sound of the rear channel is output from
the front speakers to let you experience
some of the surround sound without using
rear speakers.

Select PHANTOM mode if you have front
and rear speakers but no center speaker.
The sound of the center channel is output
from the front speakers.

Time lag between the surround sound output
from front speakers and rear speakers. By
adjusting the delay time of the rear speakers,
you can obtain the feeling of presence. Make
the delay time longer when you have placed
the rear speakers in a small room or close to
your listening position, and make it shorter
when you have placed them in a large room
or apart from your listening position.

Decoding system of Dolby Surround sound
standardized in TV programs and movies.
Compared with the former Dolby Surround
system, Dolby Pro Logic Surround improves
sound image by using four separate channels:
off-screen audio effects, on-screen dialog,
left-to-right panning, and music. These
channels manipulate the sound to be heard
and enhance the action as it happens on the
screen. To take advantage of Dolby Pro Logic,
you should have at least one pair of rear
speakers and/or one center speaker. You also
need to select the appropriate center mode to
enjoy a full effect.

Encoding and decoding system of Dolby
Surround sound for consumer use. Dolby
Surround decodes the extra channels on the
Dolby Surround-encoded sound tracks of
movie videos and TV programs and produces
sound effects and echoes that make the action
seem to envelop you.

The amplifier offers Dolby Surround as one
of the pre-programmed sound fields. If you
have rear or center speaker(s), we
recommend that you customize the Dolby
Surround sound field by selecting the
appropriate center mode to take advantage of
Dolby Pro Logic Surround sound.

Variable of sound that composes sound
image, such as tone or delay time. You can
customize the pre-programmed sound fields
by adjusting parameters to suit your listening
situation.

Sound pattern produced by a sounding
source or sources in a given environment due
to direct and reflected sounds and the
acoustics of the environment. The amplifier
offers 5 pre-programmed sound fields
(ROCK, POPS, CLASSIC, MOVIE and
GAME) to let you enjoy surround sound
easily.