i need help look for hooks

I looked in the wiki but i could not remember the name. one runs before the player can talk and the other runs when they let go the voice communication button (default-x).
My plan is to make a script that plays walky-talky sounds when they use voice.

http://wiki.garrysmod.com/page/Hooks/Base <-- new hooks
http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/indexd101.html <-- old hooks
http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/index54e6.html <-- OMG LOOK A HOOK! (for voice end D:)
BUT WAIT THERE IS MOAR!
http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/index965c.html <-- hook for voice start D: