Physics > EXAM > Psychoacoustics Exam 4 | 30 Questions with 100% Correct Answers | Updated & Verified (All)
Psychoacoustics Exam 4 | 30 Questions with 100% Correct Answers | Updated & Verified
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Define Equal Loudness Levels and How do we determine them? - ANS - By definition, when one refers to the loudness level of a sound, one is comparing the loudness of that sound with the loudness of a ... 1000 Hz tone. Loudness level is measured in units called phons. By definition, the loudness level of a sound in phons is equal to the dB SPL of a 1000 Hz tone judged equally loud. 20 phons is the loudness of a 1000 Hz tone at 20 dB SPL and the loudness of any other frequency sound that is perceived equally loud. A sound of 40 phons has the same loudness as 1000 Hz at 40 dB SPL. A sound that is 80 phons is as loud as 1000 Hz at 80 dB SPL, and so forth. An equal-loudness curve (contour) connects points of equal loudness across frequency. Fletcher-Munson curves Iso-loudness curve Phon curve [Show More]
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