const Float: IntervalBetweenSounds = 3.0;new Float: g_Time;public Function( /* ... */ ) { if( get_gametime( ) - g_Time > IntervalBetweenSounds ) { emit_sound( /* ... */ ); g_Time = get_gametime( ); return FMRES_SUPERCEDE; } else return FMRES_SUPERCEDE; return FMRES_IGNORED;}