How do i generate or obtain hex data for my I2S design

[babatola]

I have a project to generate audio using a codec. I will store the audio data in hex format on my nrf52 device and with the aid of the i2s interface, I will send the hex data to a audio codec which will then convert it to audio.

I have finished the whole programme and tested it. I am getting audio at the output but is is not exactly like the audio i recorded so I am not sure if the hex data I have is correct. I got the data by recording the sample audio with audio city then i used a hex software to convert the PCM data to hex data. But I am not sure if the hex data is correct.

The PCM audio is meant to have a sampling rate of 8KHz, mono and 16 bits.

Thanks.

[Øyvind Karlsen]

It seems to me that the data is getting mixed up somewhere. What program are you using to convert ot hex? Are you sending data that is in accordance with the I2S specification, otherwise it might be decoded differently from what you sent in?

[babatola]

Hi Karlsen, Thanks for your reply. I recorded the data with audacity (by www.audacityteam.com). and i converted it to hex data using Hex workshop software (by www.hexworkshop.com). I have made a meticulous check of my software (and both master and the slave devices configuration), i am the software is okay and in accordance to the I2S standard. I shall appreciate your help as this is my university master thesis project.

[Øyvind Karlsen]

Have you tried converting it back and replaying it?