I have done a course of biomedical signal processing in my bachelor's. So I would like a book for an easy understanding of the concepts before my research for the master assignment.
Blinowska, K. J., & Zygierewicz, J. (2011). Practical Biomedical Signal Analysis Using MATLAB® (Series in Medical Physics and Biomedical Engineering). CRC Press.
Digital Signal Processing Using MATLAB for Students and Researchers (http://freezonestore.com/mart/wp-content/uploads/2013/11/digital_signal_processing_using_matlab_for_students_and_researchers.pdf)
Gopi, E. S. (2012). Digital Signal Processing for Medical Imaging Using Matlab. Springer.
Kaniusas, E. (2012). Biomedical Signals and Sensors I: Linking Physiological Phenomena and Biosignals. Springer.
Devasahayam, S. R. (2012). Signals and systems in biomedical engineering: signal processing and physiological systems modeling. Springer.
I would like to recommend this one: Tompkins W J. Biomedical Digital Signal Processing: C-language Examples and Laboratory Experiments for the IBM PC. Prentice Hall, 1993.
This book is well written, easy to understand, and has real applications (like ECG).
Digital Signal Processing written by John G. Proakis (Northeastern University) and Dimitris K Manolakis (Massachusetts Institute of Technology, Lincoln Laboratory). It combines equally theory, problems and examples.
You can also read "Biomedical Engineering Fundamentals" by Bronzino. It is a famous book, I think you can easily gather your knowledge from it. If you need soft copy of this book, you can tell me