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| 型號： | DPL4519G |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Sound Processor for Digital and Analog Surround Systems |
| 中文描述： | 聲音處理器的數(shù)字和模擬環(huán)繞聲系統(tǒng) |
| 文件頁數(shù)： | 9/64頁 |
| 文件大?。?/td> | 1073K |
| 代理商： | DPL4519G |
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PRELIMINARY DATA SHEET
DPL 4519G
Micronas
9
2.6.1.2. Surround Reproduction
Surround sound can be reproduced with four choices:
–
REAR_SPEAKER:
If there are any surround speakers connected to the
system, this mode should be used. Useful loud-
speaker combinations are (L, C, R, S) or (L, R, S).
–
FRONT_SPEAKER:
If there is no surround speaker connected, this
mode can be used. Surround information is mixed to
left and right output but without creating the illusion
of a virtual speaker. It is similar to stereo but an
additional center speaker can be used. This mode
should be used with the Adaptive decoder Matrix
only. Useful loudspeaker combinations are (L, C, R)
(Note: the surround output channel is muted).
–
PANORAMA:
The surround information is mixed to left and right in
order to create the illusion of a virtual surround
speaker. Useful loudspeaker combinations are (L,
C, R) or (L, R) (Note: the surround output channel is
muted).
–
3D-PANORAMA:
Like PANORAMA with improved effect. This algo-
rithm has been approved by the Dolby Laboratories
for compliance with the "Virtual Dolby Surround"
technology. Useful loudspeaker combinations are
(L, C, R) or (L, R) (Note: the surround output chan-
nel is muted).
2.6.1.3. Center Modes
Four center modes are supported:
–
NORMAL:
small center speaker connected, L and R speakers
have better bass capability. Center signal is high
pass filtered.
–
WIDE:
L, R, and C speakers all have good bass capability.
–
PHANTOM:
No center speaker used. Center signal is distributed
to L and R (Note: the center output channel C is
muted).
–
OFF:
No center speaker used. Center signal C is dis-
carded (Note: the center output channel C is
muted).
2.6.1.4. Useful Combinations of
Surround Processing Modes
In principle, "Decoder Matrix", "Surround Reproduc-
tion", and "Center Modes" are independent settings (all
"Decoder Matrix" settings can be used with all "Sur-
round Reproduction" and "Center Modes") but there
are some combinations that do not create "good"
sound. Useful combinations are
Surround Reproduction and Center Modes
–
REAR_SPEAKER:
This mode is used if surround speakers are avail-
able. Useful center modes are NORMAL, WIDE,
PHANTOM, and OFF.
–
FRONT_SPEAKER:
This mode can be used if no surround speaker but a
center speaker is connected. Useful center modes
are NORMAL and WIDE.
–
PANORAMA or 3D-PANORAMA:
No surround speaker used. Two (L and R) or three
(L, R, and C) loudspeakers can be used. Useful
center modes are NORMAL, WIDE, PHANTOM,
and OFF.
Center Modes and Decoder Matrix
–
PHANTOM:
Should only be used together with ADAPTIVE
Decoder Matrix.
–
NORMAL and WIDE:
Can be used together with any Surround Decoder
Matrix.
–
OFF:
This mode can be used together with the PASSIVE
and EFFECT Decoder Matrix (no center speaker
connected).
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