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What is the definition of an equal-loudness contour?

4 years ago Accepted AvailableLanguage: English
What is the definition of an equal-loudness contour?
  • A graph that shows how our hearing varies over frequency and amplitude. (Excellent!)
  • Fletcher-Munson curves. (This is a type of equal-loudness contour, not the definition.)
  • We perceive some frequencies as louder than others. (This is the principle, but not the actual object.)
  • A graph that shows how our hearing varies over phase and amplitude. (The graph does not involve phase.)
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