作者: W. H. Thorpe , R. A. Hinde
DOI:
关键词: Type (biology) 、 Acoustics 、 Computer science 、 Sound (geography)
摘要: The design of an inexpensive sound-proof room, virtually to audio-frequencies 2 kc. and above, is described. Since for the purposes many zoological experiments low frequencies can safely be disregarded, it felt that on account cheapness relative ease construction, this type room has much recommend it.