Among the changes of the sound system in New Persian, as contrasted with earlier periods, especially with Old Persian, the first that claims mention is the change of the tenues k, t, p, c, into g, d, b, 1.
Before tracing the history of Welsh sounds, it will be convenient to give the values of the letters in the modern alphabet :- Tenues: p; t; c (= Eng.
The aspirated mediae bh, dh, gh, gh were treated as unaspirated b, d, g, g; probably also the rare aspirated tenues fell together with the unaspirated.
The mediae have become aspirate tenues with a low intonation, which also marks the words having a simple initial consonant; while the former aspirates and the complex initials simplified in speech are uttered with a high tone, or, as the Tibetans say, " with a woman's voice," shrill and rapidly.
Is the chief authority for the earlier events of his life, 127 seq.: "Ossaque legisti non illa aetate legenda Patris et in tenues cogeris ipse Lares.