Recent progress in hearing perception of loudness

Loudness is an important metric describing aural perception to sound intensity,and it is also the essential quantity from which many other psychoacoustic metrics derived.The study of loudness perception has important prac-tical meaning in noise evaluation,psychoacoustics and sound quality research,and in speech signal processing as well.Recent research works on equal loudness level contours,overall perceived loudness in dichotic hearing condition and loudness of time varying pure/complex tones are reviewed and discussed.