wm8976gefl-v Wolfson Microelectronics plc, wm8976gefl-v Datasheet - Page 105

• Manufacturer Part Number: wm8976gefl-v
• Description: Stereo Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

Production Data
5-BAND EQUALISER
Figure 57 EQ Band 1 Low Frequency Shelf Filter Cut-offs
Figure 59 EQ Band 2 – Peak Filter Centre Frequencies,
Figure 61 EQ Band 2 – EQ2BW=0, EQ2BW=1
w
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Frequency (Hz)
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The WM8976 has a 5-band equaliser which can be applied to either the ADC path or the DAC path.
The plots from Figure 57 to Figure 70 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 58 EQ Band 1 Gains for Lowest Cut-off Frequency
Figure 60
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EQ Band 2 – Peak Filter Gains for Lowest Cut-off
Frequency, EQ2BW=0
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Frequency (Hz)
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PD Rev 4.4 July 2009
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WM8976
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