e weight of the severalcoverings has been stated; the other factors can be defined best bymeans of their independent absorbing powers. Lower curves 3 and 4indicate the absorbing power of the membrane coverings alone.It is interesting to note that the diaphragm which has by itself theleast absorbing… … THEATRE ACOUSTICS * ViTRUvius, De Architectura, Liber V, Cap. VIII. (De locis con-sonantibus ad theatra eligendis.) All this being arranged, we must see with even greater care that aposition has been taken where the voice falls softly and is not so reflectedas to produce a confused effect on the…
Architectural acoustics
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