Helmholtz Resonator

What is a Helmholtz resonator?   The Helmholtz resonance is named after Hermann von Helmholtz, who created a resonator device in the 1850s. He used to identify the various frequencies and musical pitches present in music and other complex sounds. Helmholtz...

Acoustic Foam

Acoustic foam   Next, to fibreglass, acoustic foam is one of the most widely used materials for soundproofing. It is a cost-effective absorber, and a meter-square area of such treatment covering each of the reflection points can make a big difference to the...

Resonance Absorbers

What are resonant absorbers?   The resonant absorbers are frequency-dependent because of the desired resonance of the material at a particular wavelength. Different types of resonant absorbers are the Salisbury screen, the Jaumann absorber, the Dallenbach layer,...

Acoustic Board

What is an acoustic board?   An acoustic board is a special kind of board made of sound absorbing materials. Between two outer walls sound absorbing material is inserted and the wall is porous. Thus, the intensity of sound decreases when sound passes through an...

Soundproofing

What is soundproofing?   Soundproofing, also known as sound blocking, basically refers to the insulating materials used to stop the sound to enter or leave the room. Soundproofing materials are in most of the cases solid and heavy. To be more precise, the action...