oom. THE INSULATION OF SOUND 245 mentioned in some of the earlier papers (The Brickbuilder, January,1914)/ and having peculiar merits for the work. For an under-standing of these experiments and an appreciation of the conditionsthat make for their accuracy, it is necessary that the construction… … Fig. 3. Testing Room and Apparatus from all external vibration, is not merely of independent walls buthas an entirely separate foundation, and above is spanned withouttouching by the roof of the main building. The sub-basement roomof this tower is below the basement of the main building, but…
Architectural acoustics
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