Thanks to both of you. The problem was yes the correct indexing but also the sign conversion. Because i was not assigning it to any 16 bit variable the signs were not gettin registered correctly. Now i solved the issue but there is still a bit of a distortion. The original 16 bit samples sound cleaner

I am trying to convert a 16 bit audio samples to 24 bit audio samples file for replaying and mixing purposes. I am shifting it to the left by 8 bytes and then send it to the i2s_channel but the sound im getting is very distorted. This should work, because im doing the sign assignment correct. I am ...

I am trying to output an .wav file with the help of i2s interface to a D-Class amplifier ( MAX98357A )
It will then be converted to an analog signal with the help of speaker coils. I have a hard time achieving good results. Speaker outputs so much noise and only the beginning of the signal is ...