Audio Settings

Project audio configuration lives under Engine > Audio in the editor’s Settings panel (File > Settings). Changes apply to the running editor immediately and are saved to /Config/AudioSettings.json in your project.

Mix

Starting volumes for each bus. These are the values the game boots with, before an options menu overrides them.

Setting	Does
Master Volume	Scales every bus.
Music / SFX / UI / Voice / Ambient Volume	Per-bus multipliers.
Mute When Unfocused	Suspend audio while the game is in the background.

Mute When Unfocused only applies to standalone builds. The editor ignores it, because a Play In Editor window is a separate window from the main editor and losing focus on one doesn’t mean you’ve left the app. Minimizing always suspends, in both.

Output

Setting	Does
Sample Rate	Mixer rate. 0 uses the output device’s native rate.
Channels	Mixer channel count. 0 uses the device’s native layout.
Period Frames	Mixer period. Smaller is lower latency and more CPU. 0 lets the backend choose.
Max Voices	Cap on simultaneous voices (8 to 256).
Volume Smoothing	Milliseconds of ramp on volume changes. Stops abrupt edits from clicking.

Caution

Changing Sample Rate, Channels, or Period Frames rebuilds the output device. Every playing sound is stopped when that happens. Leave them alone unless you have a reason to change them, 48 kHz at the device’s native layout is a good default.

Spatialization

Setting	Does
Doppler Scale	Global multiplier on every voice’s doppler factor. 0 turns doppler off engine-wide.

Occlusion

Setting	Does
Occlusion Enabled	Master switch. Off skips all occlusion tracing.
Occlusion Trace Channel	Collision layers a trace treats as blocking.
Max Occlusion Traces Per Tick	Trace budget per world tick.

Put occluding geometry on the layer you select here. Static level geometry is usually the right answer, tracing against dynamic bodies means every crate the player pushes around muffles the world behind it.

The trace budget bounds the cost. Sources past the budget in a given tick keep their previous result and retry next tick, so raising it costs CPU and lowering it costs responsiveness, not correctness.

Reverb

Setting	Does
Reverb Room Size / Damping / Width / Wet Level	Starting shape of the shared reverb.
Music / SFX / UI / Voice / Ambient Reverb Send	How much each bus feeds the reverb return.

All sends default to 0, which leaves the reverb network unbuilt. See Mixing & Buses for changing these at runtime.

Persisting player choices

Settings you edit here are the project’s defaults. When a player changes volume in an options menu, call Sound.SaveMixSettings() to write the current bus volumes back to the same file so they survive a restart.