WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 102

• Manufacturer Part Number: WM8976
• Description: The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8976
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 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.
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Figure 51 EQ Band 1 Gains for Lowest Cut-off Frequency
Figure 53
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EQ Band 2 – Peak Filter Gains for Lowest Cut-off
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PP Rev 3.0 April 2006
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Pre-Production
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