spring course www site: http://www.comm.toronto.edu/~dimitris/ece431/
instructor:
from the bookstore /usr/local/bin/bookstore, you can get the textbook:
textbook: oppenheim and schafer, discrete time signal processing, 2nd ed., prentice hall, 1998
additional reference: proakis and manolakis, introduction to digital signal processing, mcmillan, 1988