The vowel-W is simply oo; thus, in pew, “ew” is a diphthong and equal in sound to ēoo.
The consonant-W is a buzzed oo plus a rapid transition into the sound that succeeds it. Let
represent the buzzed oo, and ❨ the rapid transition:
W = (
❨).
If, while pronouncing oo, we narrow the labial aperture by approximating the edges of the upper and lower lips, the sound