Datasheet

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6.10 Filters Tab
Kit Operation
The TLV320AIC32 has a very rich feature set for applying digital filtering to audio signals. This tab controls
all of the filter features of the TLV320AIC32. In order to use this tab and plot filter responses correctly, the
DAC sample rate must be set properly. Therefore, the clocks must be set up correctly in the software
following the discussion in Section 6.8 . See Figure 9 .
Figure 9. Filters Tab
The right-hand side of this tab shows a display which plots the magnitude and phase response of each
biquad section, plus the combined responses of the two biquad sections. The coefficients used for the
plotted responses are shown below the graph for both Biquad 1 and Biquad 2. Note that the plot shows
only the responses of the effect filters, not the combined response of those filters along with the
de-emphasis and ADC high-pass filters.
TLV320AIC32EVM and TLV320AIC32EVM-PDK User's Guide20 SBAU113 – November 2005