Retrieving "Human Ear Canal" from the archives

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1. Psychoacoustics

   Linked via "human ear canal"

   The primary focus of early psychoacoustic research involved mapping the limits of human hearing. The absolute threshold of hearing (ATH) defines the minimum sound pressure level (SPL) required for a listener to detect a pure tone $50\%$ of the time. This threshold is highly dependent on frequency, exhibiting a characteristic U-shaped curve in the audiogram.
   The lowest sensitivity …