参数资料
型号: TDA7412
厂商: STMICROELECTRONICS
元件分类: 音频控制
英文描述: 1 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44
封装: 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44
文件页数: 13/56页
文件大小: 716K
代理商: TDA7412
TDA7412
20/56
1.12 Subwoofer
Several different applications are possible with the Subwoofer-circuit:
1. Subwoofer-Filter OFF
a. Main-source stereo (AC-coupled)
b. Second-source stereo (DC-coupled)
c. Main-source mono-differential (DC-coupled)
d. Second-source mono-differential (DC-coupled)
2. Subwoofer-Filter ON
a. Main-source mono-differential (DC-coupled)
b. Second-source mono-differential (DC-coupled)
c. Center-Speaker-Mode (filtered mono signal at SWL, unfiltered mono signal at SWR)
In all applications the phase of the output-signal can be configured to be 0° or 180° . In the Center-Speaker-
Mode only at the filtered output the phase is changed.
Figure 16. Application1 using internal Highpass- and mono Low-pass-Filter
VOICE BAND
BANDPASS
BASS-FILTER
LOWPASS
220nF
MS MONO
MAIN SOURCE
RIGHT CHANNEL
MAIN SOURCE
SPEAKER FRONT
SWIN
ACINR
ACINF
OFF/ON
FC
ACOUT
SPEAKER REAR
SPEAKER SUBWOOFER
D00AU1156
LEFT CHANNEL
SECOND SOURCE
25K
50K
25K
SEC.S MONO
PROGRAMMING
5/1xxxxxxx
7/xxxxx1xx
10/xxxx10xx
12/1010xxxx
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