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- Q7564818 subject Q6363880.
- Q7564818 subject Q7157166.
- Q7564818 subject Q8680888.
- Q7564818 abstract "A sound trap is a special acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.In its simplest form, a sound trap consists of an offset in the ductwork to reflect the sound back to its source. This configuration is often combined with the use of sound-absorbing material inside the trap. The physical dimensions of the sound trap may be selected to tune the trap to specific frequencies of sound. As such, it is then essentially a Helmholtz resonator used as a passive noise-control device.".
- Q7564818 wikiPageWikiLink Q11652.
- Q7564818 wikiPageWikiLink Q1453244.
- Q7564818 wikiPageWikiLink Q1758948.
- Q7564818 wikiPageWikiLink Q179448.
- Q7564818 wikiPageWikiLink Q1798773.
- Q7564818 wikiPageWikiLink Q6363880.
- Q7564818 wikiPageWikiLink Q7157166.
- Q7564818 wikiPageWikiLink Q82811.
- Q7564818 wikiPageWikiLink Q858576.
- Q7564818 wikiPageWikiLink Q8680888.
- Q7564818 comment "A sound trap is a special acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.In its simplest form, a sound trap consists of an offset in the ductwork to reflect the sound back to its source. This configuration is often combined with the use of sound-absorbing material inside the trap.".
- Q7564818 label "Sound trap".