Nfs III sounds

[Theycallmebk14]

Alright so my question this time is different.

What do the following sound files represent?

Car.BNK
OCAR.BNK
OCARD.BNK
SCAR.BNK

from zpectre's nfs IV sound tutorial, I'm guessing that:

CAR.BNK = player 1 car
OCAR.BNK = opponent car
SCAR.BNK = player 2 car

But I have no clue what OCARD.BNK is for? Can anyone enlighten me?

[Theycallmebk14]

Okay so I've done some tests by making really different sounds for these files.  I can confirm the following:

1) CAR.BNK is the sound of your car in single player mode
2) SCAR.BNK is the sound of player 1 car and player 2 car in splitscreen mode
3) OCAR.BNK is the sound of the opponent's car in single player mode
4) At higher rpms, the relevant BNK file sound is played at a louder volume and a higher frequency.  And for lower rpms, the relevant BNK file sound is played at a lower volume and a lower frequency.

I haven't really figured out OCARD.BNK yet though.  I think it might be the sound of the opponent's car in splitscreen mode but the sound doesn't seem to match the OCARD.BNK file.  The confusing thing is, the opponent's car in splitscreen mode doesn't seem to match any of these BNK files.  I just gotta do more test i guess.

[Theycallmebk14]

Alright... now I'm really confused.  I just made all 4 BNK files silent sounds.  And the opponent car in split screen mode is still making normal engine sounds.  So that confirms that OCARD.BNK does not control the opponent car sound in split screen mode.

And now I don't even have a clue as to what file controls the opponent car sound in split screen mode either.  Nice... 

[Mike]

Wish I could help! I did some digging but can't find what the OCARD file is for either

[Theycallmebk14]

I appreciate the effort 

I ended up asking VEG (Evgeny) about this file.  I figured that someone who was able to reverse engineer the code for NFS III might be my best shot at this point.  He responded with this:

"As far as I remember, the files with "d" at the end are not used in normal audio mode. They are used when EAX mode was enabled (on audio cards from Creative). Unfortunately, this mode is not available on modern OS at all. But you can use some wrappers to enable it (Creative ALchemy or IndirectSound)."

He also mentioned that (as far as he can remember) when EAX mode is enabled, these files with "d" at the end are used instead of the files that do not have a "d" at the end.

[Mike]

Well that makes sense. And explains why you didn't notice a change when you modified it