參數(shù)資料
型號(hào): MSP34X1G
廠商: Electronic Theatre Controls, Inc.
英文描述: Multistandard Sound Processor Family with Virtual Dolby Surround
中文描述: 多標(biāo)準(zhǔn)聲音處理器系列與虛擬杜比環(huán)繞聲
文件頁(yè)數(shù): 38/104頁(yè)
文件大小: 871K
代理商: MSP34X1G
MSP 34x1G
PRELIMINARY DATA SHEET
38
Micronas
SUBWOOFER OUTPUT CHANNEL
00 2C
hex
Subwoofer Level Adjustment
bit[15:8]
0C
hex
...
01
hex
00
hex
FF
hex
...
E3
hex
E2
hex
...
80
hex
00
hex
+12 dB
+1 dB
0 dB (default)
1 dB
29 dB
30 dB
Mute
bit[7:0]
must be zero
If MDB is added onto the main channel, this register should be set to 00
hex
SUBW_LEVEL
00 2D
hex
Subwoofer Corner Frequency
bit[15:8]
5...40
corner frequency in 10 Hz steps
(range: 50...400 Hz)
If MDB is active, SUBW_FREQ must be set to a value higher than the MDB Lowpass
Frequency (MDB_LP). Choosing the corner frequency of the subwoofer closer to
MDB_LP results in a narrower MDB frequency range. Recommended value:
1.5
×
MDB_LP
Subwoofer Complementary High-Pass Filter
bit[7:0]
00
hex
01
hex
loudspeaker channel unfiltered
a complementary high-pass is processed in the loud-
speaker output channel
MDB added onto main channel
02
hex
SUBW_FREQ
SUBW_HP
MDB CONTROL REGISTERS
00 68
hex
MDB Effect Strength
bit[15:8]
00
hex
7F
hex
00
hex
MDB OFF (default)
maximum MDB
bit[7:0]
must be zero
The MDB effect strength can be adjusted in 1 dB steps. A value of 44
hex
will
yield a medium MDB effect.
MDB_STR
00 69
hex
MDB Amplitude Limit
bit[15:8]
00
hex
FF
hex
...
E0
hex
00
hex
0 dBFS (default limitation)
1 dBFS
32 dBFS
bit[7:0]
must be zero
The MDB Amplitude Limit defines the maximum allowed amplitude at the output
of the MDB relative to 0 dbFS. If the amplitude exceeds MDB_LIM, the gain of
the MDB is automatically reduced. Note that the Volume Clipping Mode must be
set to
dynamic
(see page 32).
MDB_LIM
Table 3
11:
Write Registers on I
2
C Subaddress 12
hex
, continued
Register
Address
Function
Name
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