This books focus is on opera house acoustics based on subjective preference theory. The various mathematical concepts are clearly and succinctly summarized in combination with drawings and diagrams. This combination of mathematical concepts illustrated by visuals creates a content that can be understood by designers and performers that do not easily use mathematics, as well as engineers and mathematicians. (Bonnie Schnitta, Noise Control Engineering Journal, Vol. 65 (1), January-February, 2017)