Why is sv_use_steam_voice set to 0?

[B@IT]

I'd like to ask that sv_use_steam_voice be set to 1. I have observed it being 0 kind of decreases the volume of some microphones, such as mine and my friends, and it silences my mic so much so that it's just pointless to talk.

 

I'm posting this here since I cant find a proper section to post this and since it's been such a long time from my last visit.