https://devzone.nordicsemi.com/f/nordic-q-a/118123/audio-data-endianness-and-playbackHi there, I have recently moved to nRF5340 for my audio recording application. I have successfully implemented I2S master on nRF5340 using SPH0465 mems microphone as a slave. As the data comes in, I push it to a ring buffer (using the built-in libraryen-USTelligent Community 13Sun, 19 Jan 2025 10:08:01 GMThttps://devzone.nordicsemi.com/thread/518959?ContentTypeID=1Sun, 19 Jan 2025 10:08:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:074e4263-aba6-4b4f-a6b5-008d6fd0b379umer<p>Update: I was able to retrieve the audio correctly.&nbsp;</p> <p></p> <p>- The data read from i2s sits in the memory as Little Endian.<br /><br /></p> <p>- Before sending over UART, I reconstruct the 24 bit sample (stacking the bytes together and shifting the bits as needed) using the datasheet of the microphone.&nbsp;</p> <p>- At the receiver end, I save the data as RAW. I was able to use this option in RealTerm, for example.</p> <p>- In Audacity, you can use Import tool: File-&gt;Import-&gt;Raw Data</p> <p>- In the settings, choose 24 bit signed PCM, 16000 Hz, no offset</p> <p></p> <p>And it should show you the audio data.&nbsp;</p><div style="clear:both;"></div>