I am using STM32F769I-Discovery board with STM32Cube_FW_F7_V1.16.0. I have the following issues on the audio driver functionality:
- I am trying to record the audio with sample audio application provided as part of this package. The driver by default record from on-board MSM/Digital mics. The recorded audio as the dc shift and very low volume. This seem to be some issue with bit shifting. Attached is the .wav file recoderd file. Although, the recorded voice subjectively appears to be fine, because of the bit shift issue, it can not be used for further processing, I am also attaching a picture of the wav plot on Audacity. I suspect, this could be the issue with DFSDM filter used in the driver.
- How do i use the analog mic connected to on board audio jack. The driver internally forces to use digital mic.
Could anybody share your thoughts on this issue.
