High-Power, Low-Frequency Loudspeakers
This paper discusses the generation, propagation, and detection of acoustic energy over a wide frequency and power level range. In particular, it describes an electro-pneumatic sonic generator which develops several kilowatts of acoustic energy. The photographs and charts illustrate several applications for this sonic generator; e.g., facilities to measure low frequency propagation and examples of metal fatigue and building structure damage criteria when exposed to high-level acoustic energy.
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