Forum: µC & Digital Electronics Audio codec, weird helicopter sound, potential data error. (WM8731)

von botoxparty (Guest)

Attached files:

Rate this post
not useful
Hey everyone,

Hopefully somebody has experienced something like this before and point 
me in the right direction.

I have a Wolfsom WM8731 connected to an STM32F405. I am able to start 
the codec however once I start transferring data over DMA to it there's 
a weird helicopter sound.

I can hear what is meant to be the data very faintly underneath the 
helicopter sound.

Does this sound familiar to anyone? (See attached audio file)


Entering an e-mail address is optional. If you want to receive reply notifications by e-mail, please log in.

Rules — please read before posting

  • Post long source code as attachment, not in the text
  • Posting advertisements is forbidden.

Formatting options

  • [c]C code[/c]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]

Bild automatisch verkleinern, falls nötig
Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.