Cars – Audio options

With patch, you can alter volume or pitch of specific audio events, alter events’ input parameters, or use extra parameters in your soundbank.

Syntax

That’s how volumes can be adjusted:

[AUDIO_VOLUME]
ENGINE_EXT = 1.0
ENGINE_INT = 1.0
GEAR_EXT = 1.0
GEAR_INT = 1.0
BODYWORK = 1.0
WIND = 1.0
DIRT = 1.0
DOWN_SHIFT = 1.0
HORN = 1.0
GEAR_GRIND = 1.0
BACKFIRE_EXT = 1.0
BACKFIRE_INT = 1.0
TRACTION_CONTROL_EXT = 1.0
TRACTION_CONTROL_INT = 1.0
TRANSMISSION = 1.0
LIMITER = 1.0
TURBO = 1.0

; New options added in 0.1.67:
HIT = 1.0
SCRAPE = 1.0
WHEEL = 1.0
SKID_EXT = 1.0
SKID_INT = 1.0

Similarly, pitch can be adjusted as well (added in 0.1.67):

[AUDIO_PITCH]
ENGINE_EXT = 1.0
ENGINE_INT = 1.0
GEAR_EXT = 1.0
GEAR_INT = 1.0
BODYWORK = 1.0
WIND = 1.0
DIRT = 1.0
DOWN_SHIFT = 1.0
HORN = 1.0
GEAR_GRIND = 1.0
BACKFIRE_EXT = 1.0
BACKFIRE_INT = 1.0
TRACTION_CONTROL_EXT = 1.0
TRACTION_CONTROL_INT = 1.0
TRANSMISSION = 1.0
LIMITER = 1.0
TURBO = 1.0
HIT = 1.0
SCRAPE = 1.0
WHEEL = 1.0
SKID_EXT = 1.0
SKID_INT = 1.0

Also, since 0.1.67 you can apply LUTs to input parameters like so:

[AUDIO_PARAMETER_TRANSFORM]
; Originally, AC would sent 10000 to soundbank, but now it’ll send 5000 instead. Or, 
; it’ll send 2500 instead of 5000 — values in-between these points are linearly interpolated.
ENGINE_EXT_RPMS = (| 0=0 | 10000=5000 |)

Supported parameters:

• ENGINE_EXT: ENGINE_EXT_RPMS, ENGINE_EXT_THROTTLE;
• ENGINE_INT: ENGINE_INT_RPMS, ENGINE_INT_THROTTLE;
• GEAR_EXT: GEAR_EXT_STATE;
• GEAR_INT: GEAR_INT_STATE;
• BODYWORK: BODYWORK_SUSP_TRAVEL_SPEED;
• WIND: WIND_SPEED, WIND_AIR_PRESSURE;
• DIRT: DIRT_SPEED, DIRT_DIRTINESS;
• BACKFIRE_EXT: BACKFIRE_EXT_THROTTLE;
• BACKFIRE_INT: BACKFIRE_INT_THROTTLE;
• TRACTION_CONTROL_EXT: TRACTION_CONTROL_EXT_DECAY;
• TRACTION_CONTROL_INT: TRACTION_CONTROL_INT_DECAY;
• TRANSMISSION: TRANSMISSION_DRIVETRAIN_SPEED, TRANSMISSION_THROTTLE;
• LIMITER: LIMITER_DECAY;
• TURBO: TURBO_BOOST, TURBO_BOV, TURBO_BOV_DECAY;
• HIT: HIT_IMPACT_ANGLE, HIT_IMPACT_SPEED;
• SCRAPE: SCRAPE_SPEED, SCRAPE_DECAY;
• WHEEL: WHEEL_BRAKE, WHEEL_SPEED, "WHEEL_INFLATION, WHEEL_SUSPENSION_DAMAGE.

Another feature is that you can add new parameters in audio soundbanks:

[AUDIO_PROPERTIES]
TURBO_THROTTLE = 1    ; for turbo sound, “throttle” input, same as in engine event
ENGINE_EXT_BOOST = 1  ; for exterior engine sound, “boost” input, same as in turbo event
ENGINE_INT_BOOST = 1  ; for interior engine sound, “boost” input, same as in turbo event

New sound events

Patch adds new car sound event as well:

• /transmission_ext: similar to transmission event, but for exterior;
  • Parameters: drivetrain_speed and throttle, same as with transmission event.

Also, there are some events which could be customized in soundbank, but if they’re missing, generic ones will be used:

• /wiper_ext: sound of moving wipers car for exterior cameras;
  • Parameters: state for animation status, to sync wipers movement with sound;
• /wiper_int: sound of moving wipers car for interior cameras;
  • Parameters: state for animation status, to sync wipers movement with sound.

Features to add later

• More events to adjust;
• New car sound events (?);
• More parameters for new soundbanks (?).