WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 112

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8985
5-BAND EQUALISER
Figure 50 EQ Band 1 Low Frequency Shelf Filter Cut-offs
Figure 52 EQ Band 2 – Peak Filter Centre Frequencies,
Figure 54 EQ Band 2 – EQ2BW=0, EQ2BW=1
w
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Frequency (Hz)
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The WM8985 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.
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Figure 51 EQ Band 1 Gains for Lowest Cut-off Frequency
Figure 53
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PP, Rev 3.5, March 2007
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Pre-Production
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