Satellite-Photography.com

Digital Signal Processing Forum
A forum for the discussion of Digital Signal Processing, Image Processing, DSP software, FPGA and related topics.
www.dsp-bg.info/

Digital Signal Processing Research Group UCD
The principal research areas of the DSP group at University College Dublin are algorithms for biomedical and audio-visual signal processing. Based in Ireland.
wwwdsp.ucd.ie/

SPECTRUM: A Student Tool for Digital Signal Processing
A freeware Macintosh program for post-run digital signal processing.
www.wam.umd.edu/

The Scientist and Engineer's Guide to Digital Signal Processing
A textbook of DSP techniques by Steven W. Smith, 1997, 640 pages. You can download the book for free. Clear explanation and low math.
www.dspguide.com/

Interactive Digital Filter Design
This is an interactive filter design package, for designing digital filters.
www-users.cs.york.ac.uk/