https://devzone.nordicsemi.com/f/nordic-q-a/38783/thingy-52-pcm-responseHello, I&#39;ve been evaluating the PDM hardware driver for the nRF52832, and the PCM output of Thingy. I&#39;ve found that, for certain impulses at the input of the microphone, the PCM output signal results overdamped and this generates some seconds of distorteden-USTelligent Community 13Mon, 24 Sep 2018 11:37:41 GMThttps://devzone.nordicsemi.com/thread/150026?ContentTypeID=1Mon, 24 Sep 2018 11:37:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e450d803-09a7-4cff-a14b-239e5aca8fe7Bj&#248;rn Kvaale<p>As of today, there are no plans to include a high pass filter to mitigate the effect you have shown. What you could do is include an issue on Github <a href="https://github.com/NordicSemiconductor/Nordic-Thingy52-FW/issues">here</a>. The team does update the FW every once in a while, so they may consider fixing this issue. You could naturally also update the PDM driver &amp; implement the filter yourself if you want.</p><div style="clear:both;"></div>