MULTI-DOMAIN ANALYSES OF ACOUSTIC ROOM CORRECTION SYSTEMS

Abstract

At low frequencies, where wavelengths of sound waves are comparable to the physical dimensions of the enclosing rooms, room modes contribute to several audible artefacts due to pressure irregularities and extended decay times at specific frequencies. While careful selection of room dimensions and layouts help minimise their audibility at some listening positions[1]–[3], multiple room modes may still be simultaneously excited to varying degrees. Common acoustic treatments, such as absorbers and diffusors, are often impractical in this frequency range due to their size and operating range limitations. As a result, acoustic technologies, such as room equalisation and room correction, are popular choices for mitigating the detrimental effects of low-frequency room modes in professional and domestic spaces alike.