Joshua Leeds is a sound researcher, music producer, and educator. He is one of few published authorities in the emerging field of psychoacoustics-the study of the effect of music and sound on the human nervous system, and bioacoustics-how human sound affects other living beings. He is the author of The Power of Sound, Sonic Alchemy, and Through A Dog's Ear (Sounds True, 2008). His application-specific soundtracks are used in homes, clinics, and classrooms around the world. He presents seminars internationally and is a faculty member of the California Institute of Integral Studies, located in San Francisco.