The Scientist and Engineer's Guide to Digital Signal Processing(dspguide.com)
dspguide.com
The Scientist and Engineer's Guide to Digital Signal Processing
http://www.dspguide.com/pdfbook.htm
2 comments
Great intro to DSP. If you're looking to build your EE library further, Ron Mancini's Op Amps for Everyone is also available as a free download from Texas Instruments. If you don't already have it, you can get it here: http://focus.ti.com/lit/an/slod006b/slod006b.pdf
Fantastic reference. I suggest you submit it as its own link.
Happy to upvote this, even though it's not new. I think this is the best introductory DSP text anyway, and I've got a bunch of them. Its treatment of the various approaches to the fourier transform (and more importantly, why they work) is outstanding.