Do you have a copy (or tha jasa link) to the original paper where Lindsay chart about scope of acoustics?
I found this reference but it is not online in the JASA web.
R. B. Lindsay, J. Acoust. Soc. Am. 36, 2242 (1964)
best regards,
Ernesto.
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Dr. Ing. Ernesto Accolti
Instituto de Automática