Gàidhlig adds vowel sounds when to many consonants are together. Its nkt written but spoken. So, "Alba" becomes "Al-a-ba" when spoken.
Maybe this will help. Theres more websites that explain it as well. If this isnt very understandable. LearnGaelic.scot is a great site as well. https://cuhwc.org.uk/page/unofficial-guide-pronouncing-gaelic
Gàidhlig sometimes has "invisible vowels" these are vowels that are pronounced but not writen. Alba is a perfect example. Its spelled "Alba" but pronounce "Al-a-ba" As for the "t" sound you are hearing, personally I hear a "p" sound. But that could be a few things. It could be dielect, or symple just how this individual says it. We all know somebody that says things their on way. I think its good, that way we get use to differences early on. One example is my grandmother says "ideer" insted of "idea"
Alba is supposed to have three syllables. It's a linguistic feature called epenthesis: http://www.akerbeltz.org/index.php?title=Svarabhakti_or_The_Helping_Vowel
You keep replying about 3 syllables. Most of us in here scratching out had don't have any issue with the syllabic count or rhythm. The issue came from the b pronounced like a p or t, and the last a pronounced like ay.
The whole lesson Alba has been AHL-ah-buh, suddenly in this audio it becomes AH-lot-ay or AH-lop-ay. Either way, it sounded like a completely new vocabulary word. Which the app is NOTORIOUS for doing, without warning or context, forcing you to burn through hearts really fast, just to learn the meaning of the new word.
Gotta say, the speaker in this one puts an incredibly sharp emphasis on the 'b', to the point where it sounds much more like a 't' or 'p', even after multiple listens. They also finish with 'eh' instead of 'a', making it sound like "a-la-teh" or "a-la-peh", rather than "al-a-ba". Perhaps I just need more practise in listening to different dialects, but it did throw me off considerably.
Never heard Alba pronounced so, in all the time I have spent in Gaelic speaking areas. There is some elision going on, fine with that, there is the helping vowel, no problem, use it myself, with words that require it .... but there on in ... ?! God only knows. I'm used to the 'b' being voiced as 'p' without pre-aspiration; even heard in the South, the old dative/genitive singular used instead, Albainn; more used to 'as Alba', because of an old rule that the preposition 'as' is used in full before a vowel ... but sorry, this pronunciation I find atypical. Ach chan eil mi as Alapa.
Sorry, thank you for the comment, but how do you mean phonetically? Don't quite follow. As I say, I am used to the helping vowel, used to b in this position being voiced as p without pre-aspiration. But, it is that this 'p' seems to shift for my ears to a broad 't' sound, though again without pre-aspiration. I don't quite follow you, when you say "just accepted what I heard phonetically,", don't we all just hear phonetically?! Or rather can transcribe what we hear in terms of systems of phonetics ... etc So, don't really know what you mean. BUT, thank you very much for your information concerning this pronunciation in Argyll. I did not hear that much Gaidhlig there, and, not, to my knowledge, this pronunciation. My lack, alas. Mòran taing a Charaid.