The car engine simulation consists of six looping sounds revolving at different RPM on-load values (on-load meaning that the gas pedal is pressed) and six other sounds matching the same RPM off-load (off-load meaning the gas pedal is released). These sounds were inserted into the blend container on two blend tracks named On-Load and Off-Load. A crossfade region was defined between each of these sounds to ensure a smooth transition between them for when the RPM game parameter changes in real time.
A volume curve attached to the game parameter “Engine_Load” was created for each blend track. This curve, which is displayed in red, defines which blend track is heard based on the current Engine_Load value:
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From -1 to ~0: the Off-Load track is heard.
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From ~0 to 1: the On-Load track is heard.
Therefore, as the game updates the current Engine_Load game parameter, the corresponding curve is heard.
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