There is an official answer to this question. It’s Transformers; of course there is an official answer to this particular question. Actually, there are several. Jury’s out on which of these interpretations in particular have caused the franchise to be Ruined Forever, but surely at least one of them has.
As usual, this is thoroughly documented to a perhaps ridiculous degree on the Transformers Wiki:
https://tfwiki.net/wiki/Transformation#Onomatopoeia
There is an official answer to this question. It’s Transformers; of course there is an official answer to this particular question. Actually, there are several. Jury’s out on which of these interpretations in particular have caused the franchise to be Ruined Forever, but surely at least one of them has.
That is ridiculous and delightful.