Ugh, fuck you, Eco. You've already asked me how to do this during one of our games on TurboTF2, and after I promptly told you to go fuck yourself, you went and bothered everyone else on the server with the same question. When you finally gained 1/16th of a brain and some kind soul told you how to do it, you were promptly banned from the server because some metatroll reported your ID to Max himself...
...to which we all lol'd.
Also, it's not setinfo " ", you puddle of crusty nutmilk.
Lurk this forum, lurk other forums, lurk youtube videos, lurk tutorials, lurk the HLDJ forums (HLSS is for faggots), lurk ANYTHING with an ounce of information that takes only a teaspoon of effort to find before posting questions that have been answered time and time again, in-turn making yourself look like a giant faggot.
Here, buddy, I'll help you out just this once. Follow my advice and fuck off or just fuck off.
Download reflex OR sp0rk_eh. Both of them DO work, they simply take a brain to figure out. Here's a hint:
open up TF2(which is what I assume you play, but it works with any Source game),
type in "sv_cheats 1"(obviously while not in a server) into the console,
alt-tab out of the game and open up reflex or sp0rk_eh, tab back into TF2,
type "voiceprotocol 1" (it will say the command doesn't exist, ignore it)
type "sv_cheats 0" to disable the cheats,
join said game and spam to your heart's content.
Now PLEASE stop asking before you lurk. If you can't find a solution while lurking, there isn't one, so don't ask.