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Advice anyone?

Les Bernstein Les at neuron.uchc.edu
Thu Oct 24 19:00:05 EST 1996

Thomas Sporer wrote:
> In article <845038517snz at howl.demon.co.uk>,
> Tony Woolf <Tony at howl.demon.co.uk> wrote:
> >
> >However there is a problem: the apparent sound level when listening on
> >earphones is "too low".  To put it another way, a sound that waggles
> >your eardrum by a certain amount will not sound so loud if it
> >originates in earphones as it will if it originates in the outside
> >world.  The difference is typically 6 decibels which is enough to
> >cause trouble.
> >
> Do you have a reference for that fact ?
> Somebody mentioned that there is a difference of the absolute threshold
> between headphones and loudspeaker reproduction of about 8-12 dB. The 6dB
> you mentioned above may be part of this effect.
> Thomas

This refers to the MAF (minimum audible field) and MAP (minimum audible
pressure) thresholds.  You can read about them in any relevant
introductory text.

L. Bernstein

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