https://devzone.nordicsemi.com/f/nordic-q-a/35694/unable-to-decode-adpcm-from-thingy-52Hi guys, I have a setup to receive the microphone data from the Thingy 52 on an nrf52840 evaluation board. Currently I recive the 131 audio packages ADPCM encodet. In the second step I implemented the iOS Swift example ( https://github.com/NordicSemiconductoren-USTelligent Community 13Tue, 30 Mar 2021 18:39:41 GMThttps://devzone.nordicsemi.com/thread/302649?ContentTypeID=1Tue, 30 Mar 2021 18:39:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c832386-9b91-4747-94e2-43e4cd05bb63Miguel Carvalhosa<p>Hi,</p> <p>I am having a similar issue.</p> <p>Peter, did you manage to solve the problem?</p> <p>Thank you in advance!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137606?ContentTypeID=1Tue, 26 Jun 2018 08:13:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7de2c9b5-e000-40eb-a70e-4a385b347913Aleksander Nowakowski<p>Just to make your life a bit easier:</p> <p>Encoding ADPCM in C: <a href="https://github.com/NordicSemiconductor/Nordic-Thingy52-FW/tree/master/libs/dvi_adpcm">https://github.com/NordicSemiconductor/Nordic-Thingy52-FW/tree/master/libs/dvi_adpcm</a></p> <p>And here encoding and decoding:&nbsp;<a href="http://www.cs.columbia.edu/~gskc/Code/AdvancedInternetServices/SoundNoiseRatio/dvi_adpcm.c">www.cs.columbia.edu/~gskc/Code/AdvancedInternetServices/SoundNoiseRatio/dvi_adpcm.c</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137514?ContentTypeID=1Mon, 25 Jun 2018 15:52:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3baa0a59-7ac0-466b-89d0-55dd20ba9216Kenneth<p>Hi,</p> <p>The thingy source code should have encoding and decoding to/from adpcm, written in C. No swift-&gt;C should be required. I suggest you start there.&nbsp;</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>