MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 37

• Manufacturer Part Number: MSP3421G
• Description: Multistandard Sound Processor Family with Virtual Dolby Surround
• Manufacturer: MICRONAS [Micronas]

PRELIMINARY DATA SHEET
Table 3–11: Write Registers on I
Micronas
Register
Address
00 05
hex
Function
Spatial Effects Loudspeaker Channel
bit[15:8]
bit[7:4]
bit[3:0]
Spatial effects should not be used together with 3D-PANORAMA or
PANORAMA.
There are several spatial effect modes available:
In mode A (low byte = 00
the incoming signal is mono, Pseudo Stereo Effect is active; for stereo signals,
Pseudo Stereo Effect and Stereo Basewidth Enlargement is effective. The
strength of the effect is controllable by the upper byte. A negative value reduces
the stereo image. A strong spatial effect is recommended for small TV sets
where loudspeaker spacing is rather close. For large screen TV sets, a more
moderate spatial effect is recommended.
In mode B, only Stereo Basewidth Enlargement is effective. For mono input sig-
nals, the Pseudo Stereo Effect has to be switched on.
It is worth mentioning, that all spatial effects affect amplitude and phase
response. With the lower 4 bits, the frequency response can be customized. A
value of 0
function for L or R only signals. A value of 6
only signals, but a low-pass function for center signals. By using 8
quency response is automatically adapted to the sound material by choosing an
optimal high-pass gain.
hex
Effect Strength
7F
3F
...
01
00
FF
...
C0
80
Spatial Effect Mode
0
2
Spatial Effect High-Pass Gain
0
2
4
6
8
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
yields a flat response for center signals (L = R), but a high-pass
2
C Subaddress 12
Enlargement 100%
Enlargement 50%
Enlargement 1.5%
Effect off
reduction 1.5%
reduction 50%
reduction 100%
Stereo Basewidth Enlargement (SBE) and
Pseudo Stereo Effect (PSE). (Mode A)
Stereo Basewidth Enlargement (SBE) only. (Mode B)
max. high-pass gain
2/3 high-pass gain
1/3 high-pass gain
min. high-pass gain
automatic
hex
), the spatial effect depends on the source mode. If
hex
, continued
hex
has a flat response for L or R
hex
, the fre-
MSP 34x1G
Name
SPAT_MAIN
37