1) Incident Sound / Reflected Sound / Transmitted Sound / Absorbed Sound On the other hand, sound treatments are used when you want to improve sound quality within an environment – for diners to hear and understand conversations at their tables in a restaurant, for students to understand teachers, for the whole audience to enjoy the music in an auditorium. When treating rooms correctly, echo and reverberation is reduced – and to treat rooms, there are two methods available: sound absorption and diffusion. Sound absorption is defined as the incident sound that strikes a material that is not reflected back. Types of Surfaces: Reflective / Absorptive / Diffusive Diffusion is the method of spreading sound energy with a diffuser to improve sound in a space. Diffusion spreads the reflected sound energy in a room, also reducing the harmful effects of strong echo and reverberation. In a concert hall, for example, diffusion panels are used to enhance the richness of sound and help create a sense of spaciousness. For the majority of conventional acoustic materials, the density and thickness of the material affect the sound absorption amount and frequencies absorbed by the material.
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