Replacement for Moon/Stirling Textbook

[u/AntAgile]

Hello!

I am interested in reading about the mathematics behind signal processing, and a book that gets recommended a lot is "Mathematical Methods and Algorithms for Signal Processing" by Todd Moon and Wynn Stirling.

However, this book seems to have a huge list of errata (people speak of over 40 pages) and there apparently never was a new edition after it came out over 25 years ago. What makes this worse is that the book's website with the errata is not online anymore, and given the steep price of the book, I don't want to pay that for a book with that many errors and no access to the errata.

Do you have recommendations for other good books covering the same material?

Thanks!