This is a good lecture from people-who-know-things about the difficulties in doing and interpreting headphone measurements.
Just heard about this project on the BBC News this morning. “According to non-profit organisation World Wide Hearing, fewer than one in 40 people who need hearing aids in developing countries can afford them.”
A two-part excellent podcast on the effects of sound on our health.
I love two of the quotes in this nice obituary at Stereophile:
‘… some things that look gross in the frequency response, the ear says, “I don’t care”.’
– Siegfried Linkwitz
“Measurements are useful tools, but don’t let them hold you hostage.”
– Michael Fremer