How Valve built soundproof booths

Between the Lanes: The Sound (Proof Booths) of Silence.
Welcome back to Between the Lanes, a blog feature where we let members of our development team walk through some of the challenges, bugfixes, and occasional happy accidents we encounter while working on a game as unique as Dota, and an event as unique as The International. The International is an unbelievably huge endeavor, watched by millions of people around the world.

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