Abstract
The decay of the sound field in the reverberation room at the NRC has been examined using a computer-controlled real-time analyzer. This system provides the means of studying in detail the spatial variations of reverberation times and decay linearity. Many decays were recorded for a number of diffuser systems and microphone positions including corner microphones. The results obtained are compared with the requirements on spatial variation and linearity in ASTM method of test C423. The requirements are not easily met.
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