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