David Griesinger is a physicist who works in the field of sound and music. At Harvard, he worked as a recording engineer, learning the tremendous importance of room acoustics in recording technique. After finishing his PhD in Physics (the Mösbauer Effect in Zinc 67) he developed one of the first digital reverberation devices, which eventually became the Lexicon 224 reverberator. He also is the designer of the LARES reverberation enhancement system. His website is http://www.davidgriesinger.com/