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WM8976 bảng dữ liệu(PDF) 102 Page - Wolfson Microelectronics plc

tên linh kiện WM8976
Giải thích chi tiết về linh kiện  Stereo CODEC With Speaker Driver
PDF  108 Pages
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM8976 bảng dữ liệu(HTML) 102 Page - Wolfson Microelectronics plc

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WM8976
Pre-Production
w
PP Rev 3.0 April 2006
102
5-BAND EQUALISER
The WM8976 has a 5-band equaliser which can be applied to either the ADC path or the DAC path.
The plots from Figure 50 to Figure 63 show the frequency responses of each filter with a sampling
frequency of 48kHz, firstly showing the different cut-off/centre frequencies with a gain of
±12dB, and
secondly a sweep of the gain from -12dB to +12dB for the lowest cut-off/centre frequency of each
filter.
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 50 EQ Band 1 Low Frequency Shelf Filter Cut-offs
Figure 51 EQ Band 1 Gains for Lowest Cut-off Frequency
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 52 EQ Band 2 – Peak Filter Centre Frequencies,
EQ2BW=0
Figure 53
EQ Band 2 – Peak Filter Gains for Lowest Cut-off
Frequency, EQ2BW=0
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 54 EQ Band 2 – EQ2BW=0, EQ2BW=1



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