Books like Digital Signal Processing
John G. Proakis, Dimitris K. Manolakis
Digital Signal Processing is 1,004 pages, about 18 hours 24 minutes at 250 words a minute.
7 books to read next
How long each takes
Fundamentals of Digital Signal Processing 6.1 h 
Discrete-time Signal Processing 16.4 h 
Fundamentals of Signals and Systems Using the Web and Matlab 12.3 h 
Medical Imaging Signals and Systems 9.1 h 
Analog Signals and Systems 9.7 h 
Signals and Systems 14.7 h 
Digital Coding of Waveforms 12.6 h Bar height shows length. Estimated at 250 words a minute.