@sandhi changes in English

I'm appalled by your statement that English words change sound depending on speed. I was taught at highschool that Sanskrit has such sound changes, called /sandhi. I learnt my English at college, and they never mentioned anything remotely like those changes. Now I'm an ESL teacher at a Kolkatta highschool, and I'm good at what I do, I know what I'm talking about! I'm positive that such sound changes ONLY happen in Sanskrit, but not in any other language I have been ever taught about or I personally speak.

I said that the changes happen in fast speed; I did not said that anyone is aware that the changes happen. That is usually NOT the case. Make a native Spanish speaker read aloud the phrase "tres rosas rojas" at normal speed, then make the same speaker again red aloud the three words, one by one. And record everything. Then pass the recordings thru some expensive sound-analyzing software, and also make other Spanish speakers listen to it. The software will show that the two word-final "s" have changed sound in the fast recording. The other Spanish speakers wil be unable to detect any sound change in the fast recording and will say that the four "s" are exactly the same "s" sound.