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m). Larger stages can be used for recording voice over by adding absorptive panels around the actors. Flutter echo is particularly important to control so at least two nonparallel wall surfaces require treatment. ADR rooms should have a flat reverberation time versus frequency characteristic. Diffusion can be helpful and throw rugs are used to vary the room characteristics.
With animated films the dialog is often recorded first
and the animation created later to fit the sound. With film or video, the actors must watch the picture and synchronize their voices to it. Video monitors are built into voice-over booths for this purpose. A communication system including a window between the booth and the studio and an intercom is a necessary part of the design.
Portions of this article have previously been published in Architectural Acoustics, 2006, Academic Press.AT
Marshall Long lives in Sherman Oaks, California with his wife of thirty-four years (She was very young when they were married). He enjoys reading, writing, design- ing home additions, and concert halls. His website is www.mlacoustics.com.
Acoustical Society of America Books,
Paper Colletions, Demos,Videos
Highlighting the collection is the Scientific Papers of Lord Rayleigh written from 1869-1919 on topics such as sound, mathematics, general mechanics, hydro-dynamics, and properties of gasses and Collected Works of Distinguished Acousticians - Isadore Rudnick with over 100 papers covering Rudnick’s research in physical acoustics. The ASA collection includes Auditory Demonstrations containing demos of various characteristics of hearing and Measuring Speech Production demonstrations for use in teaching courses on speech acoustics, physiology, and instrumentation.
Historical works include: Study of Speech and Hearing at Bell Telephone Laboratories containing
historical documents from AT&T archives. Technical Memoranda issued by the Acoustics Research Laboratory-Harvard University between 1946 and 1971 on topics such as bubbles, cavitation, and properties of solids, liquids, and gasses. Proceedings of the 1994 Sabine Centennial Symposium including papers covering virtually every topic in architectural acoustics and the Proceedings of the ASA’s 75th Anniversary.
The VHS videos in the collection are Speech Perception presented by Patricia K. Kuhl and Fifty Years of Speech Communication with lectures by distinguished researchers covering the development of the field of Speech Communication.
To view Tables of Contents and Prefaces and to purchase these publications please visit www.abdi-ecommerce10.com/asa/.
14 Acoustics Today, April 2013