https://devzone.nordicsemi.com/f/nordic-q-a/103509/play-pcm-raw-data-on-nrf5340Hello, I want to play a .wav audio file on nRF5340 audio dk. I convert the wav file into raw data and store it in an array. After that, I play it using nrfx_i2s_start, but the output sound is very noisy. Here is my code: The PCM raw data sizeen-USTelligent Community 13Wed, 24 Jul 2024 12:49:29 GMThttps://devzone.nordicsemi.com/thread/495418?ContentTypeID=1Wed, 24 Jul 2024 12:49:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f68f8d48-dd04-49c0-9493-60bb84e09299PSR<p>Hi,&nbsp;</p> <p>Could you please provide source code for playing the PCM HEX data in nRF5340 audio Dk&nbsp; Board.</p> <p></p> <p>Thanks &amp; Regards,</p> <p>PSR.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/444945?ContentTypeID=1Thu, 07 Sep 2023 13:12:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:608e55d4-4668-460c-8c3d-29dedc7c53adKarl Ylvisaker<p>Hello LandyWang,<br /><br />Thank you for your patience with this.<br />A mismatch in buffer sizes could definitely cause choppy audio output.<br />I am glad to read that you now are able to output the sound as expected! :)&nbsp;<br /><br />Please do not hesitate to open another ticket if you should encounter any other issues or questions in the future.<br /><br />Good luck with your development!<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/444854?ContentTypeID=1Thu, 07 Sep 2023 08:00:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eedf0f27-e39a-4e2b-b990-08c389aa1a26LandyWang<p>I think I have found the cause of this problem. The buffer_size setting in nrfx_i2s_start is too large.</p> <p>I modified the code, divided the raw data into several smaller buffers, and then processed them with nrfx_i2s_next_buffers_set. Now the sound can be output normally</p><div style="clear:both;"></div>