Some Reasons to Revise the International Standard ISO 226:2003: Acoustics—Normal Equal-Loudness-Level Contours
نویسندگان
چکیده
منابع مشابه
Equal-loudness-level contours for pure tones.
Equal-loudness-level contours provide the foundation for theoretical and practical analyses of intensity-frequency characteristics of auditory systems. Since 1956 equal-loudness-level contours based on the free-field measurements of Robinson and Dadson [Br. J. Appl. Phys. 7, 166-181 (1956)] have been widely accepted. However, in 1987 some questions about the general applicability of these conto...
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An empirical equation from Riesz's classic study on difference thresholds is treated in a new manner. Reformulating the expression for the Weber fraction allows one to account for the shape of the loudness function at different frequencies. Furthermore, the emerging loudness function unifies both the commonly used power and logarithmic laws of sensation. In principle, equal loudness contours ca...
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Interfrequency loudness matches were obtained for 12 pairs of frequencies from 1 to 16 kHz over a range of sensation levels (SL) from 4-to-100 dB. At 10 kHz and below, a linear matching function with a slope of 1.0 provides a good account of the data. In contrast, loudness-matching functions at higher frequencies are curvilinear in shape. Moreover, the regional slope values are both level and f...
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The equal-loudness contours describe the frequency characteristic of sensitivity of our auditory system. A set of the equal-loudness contours based on British data measured in mid-1950 was standardized as ISO 226. However, several research results reported in mid-1980 showed that the set of equal-loudness contours in ISO 226 contained a large error. We, therefore, carried out this project to de...
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This paper describes the work currently being undertaken to progress ISO/IEC TR 15504 to the status of a full International Standard, and outlines the changes in design that are to be incorporated in the revision. It describes the inputs for the design decisions that were taken; identifies the fundamental changes in the architecture of the Standard; and briefly describes the current status of t...
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ژورنال
عنوان ژورنال: Open Journal of Acoustics
سال: 2012
ISSN: 2162-5786,2162-5794
DOI: 10.4236/oja.2012.24016