I'm an analog engineer with close to zero digital experience. Nevertheless I'm curious about the possibility of using the ADAU1452 to generate a DC control voltage to drive a VCA, and I wanted to see if you all think I'm barking up the right tree here...
I am looking for a way to:
1) Convert an analog audio signal to digital
2) Rectify the audio in the digital domain, creating an absolute-value DC signal
3) Apply some time constants to the DC signal, slowing the rise and fall times to user-definable time constants
4) Convert the resulting signal to an analog DC output.
After scratching the surface, it seems like the ADAU1452 product, in conjunction with SigmaStudio, is a solid way to go. The chip has extensive capabilities, way beyond my requirements, which would leave me plenty of room to drastically overcomplicate the original simple idea into a long-term, never-ending development idea, which is exactly my idea of a good time!
Before I get the eval board and start committing time to this, I thought I'd check in here and see if you more experienced folk don't steer me in some other direction first.
Pardon the vague question! Just a sanity check, really. Thanks!