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date: 25 June 2022

Abstract and Keywords

This article is concerned with the auditory representation of sound intensity, and its perceptual correlate of loudness. Loudness is the primary perceptual correlate of physical sound intensity or strength, often described as the characteristic of sound ranging from very soft to very loud. It discusses intensity discrimination and the dynamic range of hearing, techniques for measuring loudness, and the complex relation of loudness to the physical characteristics of sounds. Following this, the article explains how loudness is affected by parameters, and how intensity is coded in the auditory system. Furthermore, it provides a historical overview of loudness modelling. It also gives a brief overview of the perception of loudness for hearing-impaired listeners. Finally, it describes important new developments in loudness modelling.

Keywords: loudness, intensity coding, sound intensity, auditory system, hearing-impaired

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