On Palatal Stop

PE22/66 (6)

t in ty is the 'front explosive' [c], as e.g. Hungarian ty; but it is followed by an appreciable partly unvoiced y-offglide. This is more marked medially (where ty counts as a group); less so initially.

LotR AppE (I)

TY represents a sound probably similar to the t in English tune. It was derived mainly from c or t+y. The sound of English ch, which was frequent in Westron, was usually substituted for it by speakers of that language.

PE13/63

In sound it is now a very forward palatal stop foll[owed] by a distinct y off-glide; in some dialects it is practically E[nglish] ch with or without a clear y off-glide.

PE14/41

ty: is a very fronted 'k' or palatalised 't' followed by a fairly distinct 'y'-glide