wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 102

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8982
5-BAND EQUALISER
Figure 62 EQ Band 1 Low Frequency Shelf Filter Cut-offs
Figure 64 EQ Band 2 – Peak Filter Centre Frequencies,
Figure 66 EQ Band 2 – EQ2BW=0, EQ2BW=1
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Frequency (Hz)
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The WM8982 has a 5-band equaliser which can be applied to either the ADC path or the DAC path.
The plots from Figure 62 to Figure 75 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.
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Figure 63 EQ Band 1 Gains for Lowest Cut-off Frequency
Figure 65
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EQ Band 2 – Peak Filter Gains for Lowest
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PP, Rev 3.2, September 2008
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Pre-Production
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