thank you for your help.
the "sounding object"-book is available here: http://www.soundobject.org/SObBook/
http://www.mondo-estremo.com is offline! is the url correct? i suppose the "Introduction to Digital Signal Processing" by Davide Rocchesso will be available soon then.
the tutorial from http://music.dartmouth.edu/~book/MATCpages/tableofcontents.html seems very promising indeed!
jacques