David Lubman is an acoustical scientist/consultant, and president of DL Acoustics, a firm located in southern California.'He consults in architectural acoustics, noise control, school acoustics, sound quality, transportation noise, psychoacoustics, and forensic acoustics.'His research interests include:'Physical and subjective aspects of room reverberation'Noise control and evaluation'Classroom acoustics'Speech intelligibility'Product sound quality'Archaeoacoustics