In competitive CS2, the outcome of even aim duels is often decided by who acquires location information first. This article breaks down how sound falloff radius, occlusion, and orientation interact, and how to convert audio cues into actionable pre-aim and positioning decisions.
After enough ranked matches, a counterintuitive truth emerges: the closer the aim duel, the less the crosshair decides victory—and the more it comes down to who knows where the other is first. Sound is the cheapest and leakiest link in that information chain. Many players treat footsteps as a simple "hear it, call it" trigger, but what actually matters in an angle-hold is the combined effect of falloff radius, occlusion, and orientation. That combination determines whether the step you heard came from an enemy three meters away or from someone fifteen meters away throwing a fake.
1. Falloff Is Not a Volume Slider—It's a Moving Boundary
In-game sound falloff can be roughly imagined as a sphere centered on the source, with its radius set by the action type: walking leaks almost nothing, normal movement has a clear mid-range audible zone, and landing or reloading stretches the radius further. The key is that this boundary deforms with map geometry. Walls, crates, and stair corners eat high frequencies and leave a low-frequency "thud," so the footsteps you hear at A might actually come from a quick-stop in the B tunnel.
The most common mistake angle-holders make is treating "heard" as "located." The correct approach is to translate the sound into an action type first, then into a position interval. Muffled and short usually means movement behind a thin wall; crisp and scattered often means same-space movement; with a slight tail, it's the aftershock of a landing. Classify first, narrow down second, and only then push your crosshair over. Reverse the order and you'll execute a perfect pre-aim in the wrong direction.
2. The Angle-Holder's Information Gap Is Really About Who Pays the Sound Tax
Holding an angle as a defender comes with a natural advantage: standing still makes no sound. But that advantage has a cost—you're also giving up active information gathering. Attackers pay a "sound tax" with every step they take, while defenders trade silence for an auditory head start. The problem is that many angle positions waste this head start: stand too far forward, and before the enemy's footsteps even enter the falloff zone, your own reload or weapon-swap gives away your position.
So angle-holding requires two calculations. First, your "sound budget": am I allowed to reload, switch to knife, or step on a wooden crate this round? Second, the opponent's approach path: which lane will he come from, and which segment of that lane is a walk zone versus a must-run zone? Align these two calculations and you'll realize some positions aren't worth holding at all—not because you can't win the fight, but because you're already at a sound disadvantage.
3. Turn Your Ears into Pre-Aim: Three Practical Habits
First, give yourself a two-second silence window before entering a site. Don't stand still—break your movement into short segments, leaving gaps between steps for listening. Second, get into the habit of calling intervals, not just presence: "someone running mid-B tunnel" is ten times more useful than "someone B," and both your teammate's rotation and your pre-aim depend on that interval. Third, in clutch situations, actively create sound decoys: a deliberate reload or a step on a crate can drag the opponent's crosshair away from your real path for half a second—and that half-second is often the difference between first and dead.
Sound is not a support system; it's a second terrain map layered over the physical one. Those who can read this map hold angles with information, not just walls.