I am writing a paper about the way some ESL speakers (Indonesians primarily) drop the final /t/ sounds from consonant clusters at the end of words. I now Need some technical info from some of the experts out there. (EH, are you there?? I am particulary impressed with your knowhow!!!).
How do we describe what Native Speakers do (I am thinking standard Australian pronunciation, but happy to hear what you think of Native speech from UK and US too) when we pronounce /t/ in this position.
For example, in the word "salt" or in past tense verbs like "dropped", would you describe it that we aspirate the /t/ or not? Is it possible to describe degrees of aspiration? ie. do we give a subtle aspiration? Or is there a more technical word to describe how we produce the sound? I know its certainly not like the way we aspirate initial position /t/ (eg table), but we definitely release it, don't we????).
For the purpose of this question, curious to know if its any different if the words are in final sentence position or followed by a vowel sound (eg salt and pepper, dropped it).
I have been sitting here saying the words over and over to myself, but start to lose natural sounding speech after a while when you are analysing so much AND lack the real technical jargon to describe it anyway!
Indonesians and other speakers (eg Vietnamese) often do not produce the final /t/ at all when speaking English, and esp so with consonant clusters. What is the difference? Can I say they are using a glottal stop? Or is it just unreleased? And what is a retroflex /t/???
Sorry, I did say this was a bit technical! I am new to the deeper study of phonology and feeling a bit in over my head.

Any advice and/or websites which might be helpful welcome!!!
THANKS!!!
(ps Have cross posted in the Indonesian forum in case some Indophiles have any hints)