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Scott Dorsey wrote:
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Actually the acoustic space within headphone earcups do cause problems
too. Even the space within your ear canal!

The interesting thing is that because the volume (AND the volume of your
ear canal) are much smaller than a room, the chamber resonances that were
bass problems get moved up and turn into upper midrange problems. The bass
becomes easy since the volume is too small to have resonance issues, but
other things get harder.

** There is no problem, other than how to sensibly measure the response of a headphone.
Using an imitation head with a tiny measurement mic buried inside the ear hole is ********.

The outer ear and ear canal does NOT create response anomalies for the * owner * of that ear.
The person's brain tunes them out so we hear sounds correctly.

FYI:

ES headphones are almost acoustically transparent, creating no trapped space for resonance to exist.
Other types having a weak air seal are not very different.



....... Phil