Sound Transmission through Flanking Paths
Sound transmitted through duct walls, floors and ceilings.
Noise transmitted through duct walls, or through floors and ceilings with lower transmission loss - TL -, may dramatically diminish the effect of silencers and other acoustic enclosures.
Related Topics
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Acoustics
Room acoustics and acoustic properties. decibel A, B and C calculations. Noise Rating (NR) curves. Sound transmission through walls. Calculate 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.
Related Documents
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Sound - Attenuation and Speed vs. Sound Frequency and Air Humidity
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
Sound transmission from ducts to surrounding rooms. -
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.