Schaum's outline of theory and problems of digital signal processing by Hayes, M. H. (Monson H.) 1949-

Telecommunications signalling by Manterfield, Richard J.

Available for University of the Philippines Diliman via IET Digital Library. Click here to access
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The handbook of formulas and tables for signal processing by Poularikas, Alexander D. 1933-

C++ algorithms for digital signal processing by Embree, Paul M.

Signals and systems by Haykin, Simon

Signal analysis wavelets, filter banks, time-frequency transforms, and applications by Mertins, Alfred

Introduction to signals and system. by Lindner, Douglas K.

DSP primer by Rorabaugh, C. Britton

Digital signal processing for multimedia systems

Analog and digital signal processing by Ambardar, Ashok