The vocalizations of the Stargate glyphs are only ever described in a single episode, the season 7 finale "Lost City", when Jack sounds out seven of them, corresponding to the address of Praclarush Taonas1 (glyphs pictured below), plus the Earth point-of-origin:
Jack also explicitly identifies the vocalizations of two glyphs in isolation:
Determining how to divide "Praclarush Taonas" into six syllables, such that "sh" is the third, is left as an exercise for the reader.
This leaves 31 glyphs, in the Milky Way alone, with no identifiable vocalizations. It's presumed that they exist, but they're never mentioned on the show. Likewise, if this vocalization scheme is used in the other gate systems we see (Pegasus and Destiny gates), it's never discussed.
1 Which Daniel translates as "Lost in Fire" (later revealed to have been mostly-swallowed by a volcano):
Daniel: Praclarush Taonas. According to this it means lost in fire. It was lost.
Stargate SG-1 Season 7 Episode 22: "Lost City, Part 2"