Re: [QUESTION] Initial Geminants

Y. Penzev wrote:

>I had an idea last night to include in one of my conlang projects geminants
>(doubled consonants) like /pp/, /ss/ as separate fonemes, and to have them
>both in intervocal position (like /tassa/:: /tasa/) and in initial position
>(/paka/::/ppaka/). In all my rich collection of data about different
>natlangs I can not find a natlang that permits initial geminants. Have any
>of you ever heard about any natlang that has such feature?

IIRC that's how the "tense" consonants of Korean are transliterated, though
they are not, to my knowledge, "real" geminates.  I have seen Buginese
(Indonesia) texts transliterated with initial geminates, but that has to do
with cluing the reader as to which forms geminate when a prefix is added; it
isn't necessary if you analyze the prefixes correctly..... (i.e. the way I
do).

The question would be, how do initial geminates sound?