Glossary - Sony STR-DE345 Operating Instructions Manual
Fm stereo, fm-am receiver
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Additional Information
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.
Front
speaker (L)
Rear
speaker (L)
• 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.
Front
speaker (L)
Rear
speaker (L)
• 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.
Front
speaker (L)
Rear
speaker (L)
24
GB
• 3 STEREO mode
Delay time
Centre
Time lag between the surround sound output
Front
speaker
from front speakers and rear speakers. By
speaker (R)
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.
Rear
speaker (R)
Direct tuning
Tuning method to let you directly enter a
station's frequency using the numeric buttons
on the remote. Use this method if you know
the frequency of the station you want.
Dolby Pro Logic Surround
As one method of decoding Dolby Surround,
Dolby Pro Logic Surround produces four
Centre
channels from two channel sound. Compared
Front
speaker
with the former Dolby Surround system,
speaker (R)
Dolby Pro Logic Surround reproduces left-to
right panning more naturally and localizes
sounds more precisely. To take full
advantage of Dolby Pro Logic Surround, you
should have one pair of rear speakers and a
centre speaker. The rear speakers output
monaural sound.
Rear
speaker (R)
5.1 CH/DVD
These jacks are used to input decoded Dolby
Digital audio signals, allowing you to enjoy
5.1 channel surround sound. Use these jacks
to connect a Dolby Digital decoder or a DVD
player with a built-in Dolby Digital decoder.
Preset station
A radio broadcasting station that is stored in
Front
speaker (R)
memory of the receiver. Once you "preset"
stations, you no longer have to tune in the
stations. Each preset station is assigned its
own preset number, which lets you tune
them in quickly.
Rear
speaker (R)
Select 3 STEREO 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.
Centre
Front
Front
speaker
speaker (R)
speaker (L)
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
Reverberation
Early reflections
Direct sound
• Transition of sound from rear speakers
Direct sound Early
reflections Reverberation
Level
Early reflection time
Time
Test tone
Signal given out by the receiver for adjusting
the speaker volume. The test tone will come
out as follows:
• In a system with a centre speaker
(NORMAL/WIDE/3 STEREO modes)
The test tone is output from the front L
(left), centre, front R (right), and rear
speakers in succession.
Front (L)
Front (R)
Centre
3 STEREO
Rear (L, R)
NORMAL/WIDE
• In a system without a centre speaker
(PHANTOM mode)
The test tone is output from the front and
the rear speakers alternately.
Front (L, R)
PHANTOM
Rear (L, R)
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