" Timbre is the emblematic tone, or voice, generated by each type of instrument or biological sound source. Not only do musical instruments have singular voice characteristics but so does every living organism and most man-made machines. The difference between the sound of a violin and that of a trumpet is as distinctive as that between a cicada and an American robin, or a cat and a dog—or between a Rolls-Royce and a Formula 1 automobile. When Paul Beaver and I first began "

― Bernie Krause , Sounds from The Great Animal Orchestra (Enhanced): Air