A free program for Android, by Engineering Wale Baba.

Digital Signal Processing is a free handbook app for people interested in learning about digital signals and how they are processed. It provides a comprehensive overview of the subject and is perfect for those who want to get an understanding of the fundamentals of digital signal processing. The app covers a wide range of topics and is a great reference for anyone looking to learn about this field of engineering. It is perfect for those who want to get a basic understanding of the subject and also for those who want to learn how to implement it in their applications.

This app will help you to learn about the various topics that are covered in the field of digital signal processing.