The Acoustics Research Institute (ARI) is a non-university research institution of the Austrian Academy of Sciences in Vienna and was established in 1972 as Kommission für Schallforschung, became a Forschungsstelle in 1994 and since 2000 has the rank of an institute. Acoustics Research Institute is a multidisciplinary research institution, working in application-oriented basic research. It is addressing question related to the chain of sound, ranging from sound generation over propagation to perception. The institute offers the best knowledge and expertise in the major areas of the Acoustic Phonetics, Psychoacoustics and Experimental Audiology, Physical and Computational acoustics and Mathematics and Signal Processing in acoustics. ARI is conducting research on the localization of sound source with neuroprostheses (cochlea implants), modeling and improvement of measures of noise attenuation for traffic, the phonetical acoustics of regional dialects, the improvement of perceptually motivated coding strategies (such as MP3), and the mathematical theory of signal decomposition.