About the book: year / This man was fascinated by sound. He created the theory that there are many sounds in the world, and people are unable to hear them due to high frequencies. He explains to his doctor that he has invented a machine that will allow him to tune into the desired frequencies and convert all vibrations into audible sound. He began to hear in his headphones the screams of roses being cut by his neighbor. The next day he began experimenting with wood.