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Sound Transmission through Flanking Paths

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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.

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Related Topics

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

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.

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