Sound Transmission through Flanking Paths

Sound transmitted through duct walls, floors and ceilings.

Related Topics

• Acoustics

  Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.

• Noise and Attenuation

  Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems.

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  The speed and attenuation of sound in moist air varies with sound frequency and air humidity.

• Sound Attenuation - Main Duct to Branch Ducts

  Sound attenuation from main ducts to branch ducts.

• Sound Attenuation in Duct Elbows

  Noise attenuation in duct elbows by reflected sound.

• Sound Attenuation in Ducts due to End Reflection

  Low frequency noise transferred from main duct to end terminals is reflected back to main duct.

• Sound Transmission through Duct Walls

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• Unlined Sheet-Metal Ducts - Sound Attenuation

  Noise attenuation in unlined sheet-metal ducts.

• Ventilation Systems - Classification of Noise Reduction Silencers

  Noise in a ventilation system can be reduced by reactive, diffuser type, active and/or dissipative silencers.

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