NASA NTRS · 19740020018
Highly efficient special sound absorbing solutions
Abstract
Highly efficient special sound absorbing structures with the following criteria are considered: (1) A distribution surface of the sound absorbing material greater than that of the building element on which the structure is placed; (2) The highest possible absorption coefficient in the widest possible frequency band; and (3) adaptability to different construction and aesthetic conditions.
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Ionescu, M., Petre-Lazar, S.. 1974-06-01. Highly efficient special sound absorbing solutions. https://ntrs.nasa.gov/citations/19740020018
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