Hello everybody,
i would like to know how the "Sound Attenuator" works and the difference between Sound Attenuator, silencer and acoustic duct liner?

Question

if i use "Sound Attenuator" can i go to a high friction loss and small duct size??? and the sound level will be effected or not?

Ismael Hamad · Answer

Absorptive or dissipative silencers use sound absorbing materials to attenuate sound waves.

Dissipative silencers are widely used in HVAC duct systems. Typical dissipative silencers are configured in a parallel baffle arrangement.

dissipative noise silencer

The thickness of acoustical linings or baffles should be selected with reference to the predominant frequency of the noise. The incident sound energy is partially transformed to heat by causing motion in the fibers during its passage through the material. Absorptive silencers include lined duct attenuators, packaged cylindrical and rectangular attenuators, acoustic louvers and lined plenum chambers.

magdy abd al nour · Answer

all used for the same purpose .....the acoustic is sound proof martial inside the duct(fiberglass)

the attenuator is installed in the duct system like the VAV or VCD

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Hello everybody, i would like to know how the "Sound Attenuator" works and the difference between Sound Attenuator, silencer and acoustic duct liner?

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