The word YAHUDAH is the doorway to the actual sound.  Another name seen in Scripture shares the last two letters, UAU-HAY:

Adam's wife's name!  (see the Hebrew interlinear for this name at Gen/Bereshith 3:20).

HETH-UAU-HAY  = KUAH  (K+UAH)

Her name has the same ending two letters as the Name YAHUAH  (UAU+HAY, UAH).

Below, in tan lettering, is shown the palaeo-Hebrew script, which is the way the Name of YAHUAH looked as He wrote His personal Name in the stone tablets at Sinai with his own finger.  It is read from right-to-left.  The letters are YOD, HAY, UAU, HAY.   Our letter, "W" is a new letter, and is really what it is called:  a "double-U"  (UU).  There's actually no letter in Hebrew that matches it better than our letter, "U"  - there's not a letter W in Hebrew, but you'll see it rendered "waw" and "uau".   At the bottom, you see the Name of YAHUSHA, which is the real Name which most people have been taught is "JESUS".   In the center is the word "YAHUDAH", which serves as a litmus test for how to really pronounce the Name -- it contains all four letters of the Name, but has the letter "DALET" (D) inserted just before the last letter.   (The letter called "waw" is better described as "uau"): "Whenever I said, Let me not mention Him, nor speak in His Name again, it was in my heart like a burning fire shut up in my bones.   And I became weary of holding it back, and was helpless."   YIRMEYAHU 20:9

The word YAHUDAH is the doorway to the actual sound.  The Hebrew script above is the "autograph", the personal inscription of the Name which Yahuah used at Sinai.   "Modern" Hebrew letters are really Babylonian letters, brought back with the Yahudim after their captivity of 70 years.  The written language of the Creator, especially how He wrote His own Name with His finger, should be a subject of interest for those who claim to belong to Him.