This excellent Senior undergraduate/graduate textbook offers an unprecedented measurement of science perspective on DSP theory and applications, a wealth of definitions and real-life examples making it invaluable for students, while practical.
From the reviews:
"The material in this book treats specifically the theoretical foundation of the analog-digital conversion process and the digital signal operations in support of the conversion environment. ... this one is important because of its detailed treatment of sampling theory and analog-to-digital conversion as applied to measurement systems. Summing Up: Recommended. Upper-division undergraduates and graduate students." (J. Y. Cheung, CHOICE, Vol. 43 (10), June, 2006)