MCH is a California corporation organized in 1987 to provide comprehensive consulting in all areas of Acoustics and Media Systems. From our offices in Los Angeles County and the Phoenix, Arizona area, we have completed over 3,000 projects (many inter national) including higher education facilities, performing arts, auditoriums, music recital and rehearsal rooms, concert halls, theaters, studios, courts, churches, hotels, mixed use developments, assembly spaces, medical facilities, research labora tories, museums, renovations, libraries, and convention centers. Acoustical Services include room acoustics design, 3D computer modeling and auralization, sound isolation design, speech privacy design, HVAC noise and vibration control, field measurem ent and testing, expert witness and forensics, CALGreen, CHPS documentation, and environmental noise assessment. Media and AV Services include sound systems, recording and broadcast, security, IT infrastructure, multimedia, smart classrooms, and conf erence rooms. Our design professionals are formally trained in architectural acoustics and AV as well as in architecture, physics, mechanical engineering, recording arts, and electrical engineering. MCH Principals are recognized leaders in the Acoust ical Society of America (ASA) and the Institute of Noise Control Engineering (INCE). Our work is founded in the scientific principles of acoustics and audiovisual engineering, as well as a passion for providing cost effective and timely solutions to our clients.