Hi, Deb, I was referring to the user programmable filters of the TLV320AIC3256 . Please take look of the 2.3.3.1.10 User Programmable Filters and 2.4.2 User Programmable Filters sections. In order to configure these filters in an easier way, please take a look of the following tool: http://www.ti.com/tool/coefficient-calc . This tool is used to determine the coefficients of the biquad filters. Best regards, Luis Fernando Rodríguez S.
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