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sgtl5000 audio 7-band filters with noise

Question asked by If Zhao on Jul 27, 2016
Latest reply on Aug 2, 2016 by li xiaohui

Do anybody know how to generate coefficients for 7-band filter of sgtl5000 codec ?





we test mic recording function of sgtl5000 codec on imx6 platform,and some noise have been mixed during recording.

we conclude these noisy should be high frequency signal. so we plan to set up a low-pass filter to eliminate these noise.



according to sgtl5000 spec, 7-band filters can be configured  to do this work, but we have to generate coefficients which it needs.



could some body tell me the ways to generate these coefficients?

Many thanks!