"Musimathics: Volume 2" offers a comprehensive and accessible introduction to the mathematics and physics of music, with a particular focus on digital and computer-based aspects. This textbook is aimed at musicians, sound engineers, and anyone interested in the intersection of art and science. The author, Gareth Loy, delves deeper into the topics covered in the first volume and explains concepts such as digital audio processing, sampling, and the use of complex numbers to simplify the representation of musical signals. The chapters cover important topics including the Fourier transform, convolution, filtering, resonance, and wave propagation. These theoretical foundations are crucial for understanding today's music technology. Practical examples from the music and audio world illustrate the concepts discussed, making the book a valuable resource for all interested readers.