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’ Archaeo acoustics