Welcome 

A companion to the book, offering simple interactive tools that let you hear, see, and explore the foundations of sound. Each page invites you to experiment with intervals, strings, modes, and ancient melodies—where theory becomes experience.

The Complementary Files section provides the complete frequency–length tables and the downloadable musical exercises used throughout the book.

Select your preferred language to begin the journey into the geometry of sound. / Selecciona tu idioma para iniciar el viaje hacia la geometría del sonido." 

For those who wish to delve deeper into the theoretical foundations and the full narrative of this sonic journey.