https://devzone.nordicsemi.com/f/nordic-q-a/69897/pdm-to-i2s-by-nrf52832Hello, I use nrf52832 (SDK 17) and I wanna send sounds from a microphone (which uses PDM) to TAS2521 which is connected to a headphone and it uses I2S. here is my code to initialize TAS2521 by SPI: and in the main() function I initialized SPI anden-USTelligent Community 13Thu, 07 Jan 2021 08:24:11 GMThttps://devzone.nordicsemi.com/thread/287860?ContentTypeID=1Thu, 07 Jan 2021 08:24:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:83e1687d-1451-47fc-8709-9d55bda0d935ovrebekk<p>Hi&nbsp;</p> <p>Are you using some kind of ringbuffer/FIFO to store the incoming PDM data before it is sent out to the <span>TAS2521?</span></p> <p><span>Have you verified if the PDM and the I2S interfaces are running in sync, and produce/consume data at the same speed?</span></p> <p><span>Have you done any scope measurements to see what happens with the sound?<br />A common technique&nbsp;is to apply a sine wave to the input, and see how it changes on the output side.&nbsp;</span></p> <p><span>Best regards<br />Torbjørn</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/286727?ContentTypeID=1Mon, 28 Dec 2020 14:02:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34a68f17-e5d7-4b29-87de-bae2aaeaab66Stian R&#248;ed Hafskjold<p>Hi, because of Christmas holidays we will have to come back to you in the first week of January. Sorry for the inconvenience.</p><div style="clear:both;"></div>