[vorbis-dev] Sensitivity to sounds with frequency

[Martin C. Martin]

Hi,

I've looked in various FAQs and web pages for this info, but just can't
seem to find it.

When two tones of two different frequencies sound equally loud, what's the
(rough) relationship between their power?  This is for percussive sounds
in music, but I assume it's roughly the same for all sounds.  The ear
seems more sensitive at high frequencies.  For example, when you alternate
bass drum and high hat, and you adjust them until they both sound about
the same, the RMS power of the high hat is a lot smaller than the bass
drum.  Is the sensitivity roughly  1 / frequency?  1 / sqrt(frequency)?

Thanks,
Martin

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