Re : consonant length

Dans un courrier dat=E9 du 14/05/99 00:28:22  , Patrick Dunn a =E9crit :

<< Is there any natlanguage that differentiates between consonants of
 different length, for instance, s and ss or m and mm?  I've been thinking
 of tackling an isolating language again (those are harder than you think!)
 and thought that'd be a nice way to increase my phonemic inventory.
=20
 Thoughts? >>

I can think of Japanese (and Finnish)  although the "length" of consonant is=20
rather like a glottal stop. So maybe not Japanese (and Finnish) :-).
Maybe try with "emphatic" Chinese "s" and Arabic "t" ?

Mathias