Thanks, for another good introduction to DSP, there's this excellent website: http://jackschaedler.github.io/circles-sines-signals/index.h.... It also has good animations, and some are more interactive than mine. It takes a bit of a different path through DSP concepts, and focuses on the relationship between circles, trigonometric functions, and signal analysis.
For a more in depth study of DSP, I would recommend this book: http://www.amazon.com/Understanding-Digital-Signal-Processin.... It's quite readable for a textbook, and from my experience with linear algebra and signals and systems texts (they're all related), it's more understandable.
It would be nice to have a full online, animated DSP book, as that's a natural fit for DSP, but I'm not aware of something like that, yet. Maybe these posts could be the beginning of something like that.
There is no better book than Rick Lyons' that is linked above on Amazon (and I have browsed many others). I believe his book has several other frequency-specific methods for envelope estimation.
Thanks for the links, bookmarking and having a read now.
I'm a math nerd, so the geometric side is perfect. I can implement algorithms / find suitable libraries without issue, its having that intuitive understanding of the relationships, visualizing the mechanics that really let you think practically about problems.
For a more in depth study of DSP, I would recommend this book: http://www.amazon.com/Understanding-Digital-Signal-Processin.... It's quite readable for a textbook, and from my experience with linear algebra and signals and systems texts (they're all related), it's more understandable.
It would be nice to have a full online, animated DSP book, as that's a natural fit for DSP, but I'm not aware of something like that, yet. Maybe these posts could be the beginning of something like that.
(edit: Amazon link)