Sony TA-AV561A - Manual (Page 16)

16 EN
Additional Information
Surround sound
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.
• Types of sound
• Transition of sound from rear speakers
Test tone
Signal given out by the amplifier for
adjusting the speaker volume. The test tone
will come out as follows:
• In a system with a centre speaker
(NORMAL/WIDE/3 CH modes)
The test tone is output from the front L
(left), centre, front R (right), and rear
speakers in succession.
• In a system without a centre speaker
(PHANTOM mode)
The test tone is output from the front and
the rear speakers alternately.
Glossary
Centre mode
Setting of speakers to enhance Dolby Pro
Logic Surround mode. To obtain the best
possible surround sound, select one of the
following four centre modes according to
your speaker system.
• NORMAL mode
Select NORMAL mode if you have front
and rear speakers and a small centre
speaker. Since a small speaker cannot
produce enough bass, the bass sound of
the centre channel is output from the front
speakers.
• WIDE mode
Select WIDE mode if you have front and
rear speakers and a large centre speaker.
With the WIDE mode, you can take full
advantage of Dolby Surround sound.
• 3 CH mode
Select 3 CH mode if you have front and
centre 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.
• PHANTOM mode
Select PHANTOM mode if you have front
and rear speakers but no centre speaker.
The sound of the centre channel is output
from the front speakers.
Delay time
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.
Dolby Pro Logic Surround
Decoding system of Dolby Surround sound
standardized in TV programmes 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 centre speaker. You also
need to select the appropriate centre mode to
enjoy a full effect.
Dolby Surround
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 programmes 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 centre speaker(s), we
recommend that you customize the Dolby
Surround sound field by selecting the
appropriate centre mode to take advantage of
Dolby Pro Logic Surround sound.
Parameter
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 field
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.
Centre
speaker
Rear
speaker (R)
Rear
speaker (L)
Front
speaker (R)
Front
speaker (L)
Centre
speaker
Rear
speaker (R)
Rear
speaker (L)
Front
speaker (R)
Front
speaker (L)
3 CH
Centre
Front (R) Front (L)
NORMAL/WIDE
Rear (L, R)
Rear (L, R)
PHANTOM
Front (L, R)
Reverberation
Early reflections
Direct sound
Direct sound Early
reflections Reverberation Level
Early reflection time Time
Front
speaker (L)
Front
speaker (R)
Rear
speaker (R)
Rear
speaker (L)
Centre
speaker
Front
speaker (R)
Front
speaker (L)