发明授权
US07997380B2 Low frequency acoustic attenuator 有权
低频声衰减器

Low frequency acoustic attenuator
摘要:
An attenuation apparatus, system, and method are disclosed. The attenuator is attached to a pipe and includes a housing that includes an inner sleeve and an outer sleeve. The attenuator includes one or more masses, to resonate when exposed to waves including acoustic frequency components.
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