DPL4519G View Datasheet(PDF) - Micronas

Part Name

Description

Manufacturer

DPL4519G

Sound Processor for Digital and Analog Surround Systems

Micronas 

PRELIMINARY DATA SHEET

DPL 4519G

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).

Micronas

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