Improved Automatic Decay-Rate Meter
A. J. Presti · The Journal of the Acoustical Society of America · 1967
The original design of the automatic decay-rate meter [J. Acoust. Soc. Am. 40, 1267 (A) (1966)] has enabled us to measure the sound decay rate in a room easily and successfully, and has also enabled us to gain more insight into the operation of this device. This paper will review some of the design concepts and introduce au improved version designed to further reduce setup time and ambiguities.