I am away from a PC and hate writing via phone so please excuse the brevity.
I spotted this link on ProSoundWeb. It reminded me of a conversation I had with Prof Doug Jones (currently working with Danley Sound Labs) a year or so ago about digital signals and processing.
Take a look and give it a think. I would love to discuss it more, but from a key board!
https://www.youtube.com/watch?v=cIQ9IXSUzuM
All the best,
Barry.