Equal Annoyance Contours for Infrasonic Frequencies
نویسندگان
چکیده
منابع مشابه
Equal-loudness Contours at High Frequencies
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...
متن کاملHearing at low and infrasonic frequencies.
The human perception of sound at frequencies below 200 Hz is reviewed. Knowledge about our perception of this frequency range is important, since much of the sound we are exposed to in our everyday environment contains significant energy in this range. Sound at 20-200 Hz is called low-frequency sound, while for sound below 20 Hz the term infrasound is used. The hearing becomes gradually less se...
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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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A unique imaging modality based on Equal Thickness Contours (ETC) has introduced a new opportunity for 3D shape reconstruction from multiple views. We present a computational framework for representing each view of an object in terms of its object thickness, and then integrating these representations into a 3D surface by algebraic reconstruction. The object thickness is inferred by grouping cur...
متن کاملShape Recovery from Equal Thickness Contours
ÐA unique imaging modality based on Equal Thickness Contours (ETC) has introduced a new opportunity for 3D shape reconstruction from multiple views. These ETCs can be generated through an interference between transmitted and diffracted beams. We present a computational framework for representing each view of an object in terms of its object thickness and then integrating these representations i...
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ژورنال
عنوان ژورنال: Journal of Low Frequency Noise, Vibration and Active Control
سال: 1984
ISSN: 1461-3484,2048-4046
DOI: 10.1177/026309238400300301