Extending sharpness calculation for an alternative loudness metric input

• Published in: The Journal of the Acoustical Society of America Vol. 142; no. 6; pp. EL549 - EL554
• Main Authors: Swift, S. Hales, Gee, Kent L.
• Format: Journal Article
• Language: English
• Published: United States 01.12.2017
• ISSN: 0001-4966; 1520-8524
• DOI: 10.1121/1.5016193

Sound quality metrics help improve the psychoacoustic acceptability of devices and environments by modeling and thus enabling deliberate improvement of perceptual attributes. Sharpness as defined in DIN 45692 [(2009). Deutsches Institut für Normung, Berlin] requires inputs from Zwicker's loudness metric [ISO 532-1 (2017). International Organization for Standardization, Geneva]. This letter demonstrates that sharpness can be formulated to accept specific loudness values from Moore and Glasberg's loudness metric [ISO 532-2 (2017). International Organization for Standardization, Geneva; ANSI S3.4 (2007). American National Standards Institute, Inc., Washington, DC]. Sharpness calculations using the two loudness metrics produce similar results. This method thus enables evaluation of sharpness as a straightforward add-on to standard loudness calculations using Moore and Glasberg's metric, for which sharpness calculations were not previously available.