Submitted by soldkeyboard57 t3_z5wwmn in headphones
covertash t1_iy5b1s6 wrote
If you really want to delve into it, look into the "equal loudness contour". It's a nuanced topic, but you can always start with Wikipedia:
https://en.wikipedia.org/wiki/Equal-loudness_contour
TLDR; The human ear is most sensitive to the midrange, so you need significantly more SPL for bass and treble frequencies to be perceived as equally loud.
(Side note: Without developing careful critical listening skills to be able to perceive these differences, this debate always devolves into a pointless pissing contest, from both sides.)
WikiSummarizerBot t1_iy5b32f wrote
>An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. The unit of measurement for loudness levels is the phon and is arrived at by reference to equal-loudness contours. By definition, two sine waves of differing frequencies are said to have equal-loudness level measured in phons if they are perceived as equally loud by the average young person without significant hearing impairment.
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