SUBSIM Radio Room Forums

Do you use SH3 Commander? There's some advice about this problem in the manual for that, check time compression settings:

Quote:

Since using SH3 Commander I can no longer hear speech or most sound effects.
This problem will occur if you set the "Character animations", "Sound effects" and/or "Particle rendering" Time Compression events to 1. Reset each event back to the default value and try again (a Rollback is not sufficient to reset these settings). If your problem persists, scrutinise any new mods that you have installed since you last had full sound.

See time compression settings in SH3 Commander or else in the Windows documents folder under SH3/data/cfg/main.cfg. Mine works well and looks like this, though you may like to change some things for your preference:

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[TIME COMPRESSION]
TimeStop=0
RealTime=1
LandProximity=128
CriticalDamage=1
CrewEfficiency=1
AirEnemyDetected=1
SoundEffects=2
CharacterAnim=4
EnemyDetected=1
RadioReport=8
Particles=8
PrayState=8
HunterState=64
3DRender=32
Maximum=2048