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PostPosted: Sat Aug 05, 2017 5:11 pm 

Joined: Tue May 16, 2017 12:52 pm
Posts: 12
Hello.
Um guys from where could I get sx.exe (sound exchange)?and if you have it can you send it to me?
Thanks a lot. :)


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PostPosted: Thu Jan 24, 2019 2:13 am 

Joined: Thu Jul 02, 2015 10:43 pm
Posts: 65
Alright after 2 years without a capable PC im back. Im currently investigating/modding NFS Pro Street .tmx sounds.

The tmx has both gin files and the snr format which can only be opened in audacity but some guy on this forum said it wasn't possible to encode custom files back, need confirmation on this one though. The game has no issues reading modified tmx files, gin files can be any size or length.

SNR format is pretty much used for tones of the rpm range, much like the .abk format in previous games so unless someone makes an encoder, we're not 100% able to accurately modify sounds.

There are some float values present in the header, some very obvious ones which im 90% sure they are related to the rpm range of the sound set and others which have unknown purpose but I still think they're related to sound properties only. Luckily there is no assembly code in the .tmx format unlike the older .abk.

On the subject of using custom gin files, it isn't as straight forward as in NFSMW or Carbon, where you could hear the modified audio clearly almost with no changes or differences. In this game it's different, the audio files change a lot. (Needless to say that there are much more in-game parameters to try and modify from the database using this tool https://nfs-tools.blogspot.com/2017/09/nfs-vlted-v45-released.html I didn't even start playing with it though)


But going back to the files, it's hard for me to really pinpoint what's really happening with the audio. My test is simple, I swapped the gin acceleration file with a locomotive idling sound.

It's easy to recognize the sound in game, but it's morphed to something entirely different; I will upload a short video tomorrow maybe.

If someone wants to start testing things up just reply here, im gonna see what's possible with this game


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PostPosted: Fri Jan 25, 2019 4:03 pm 

Joined: Sun Mar 22, 2015 7:09 pm
Posts: 832
V12-POWER wrote:
My test is simple, I swapped the gin acceleration file with a locomotive idling sound.

i recommend swapping it with human speech, it will allow you to know exactly what happens with the sound
thats what i did when researching GIN files


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PostPosted: Sun Jan 27, 2019 1:14 am 

Joined: Thu Jul 02, 2015 10:43 pm
Posts: 65
id-daemon wrote:
i recommend swapping it with human speech, it will allow you to know exactly what happens with the sound
thats what i did when researching GIN files


thats a better alternative for sure lol. Haven't had time though to upload the video but will do in these days


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PostPosted: Mon Jan 28, 2019 12:49 am 

Joined: Thu Jul 02, 2015 10:43 pm
Posts: 65
Here it is, an example of what happens with the sound files. I modified the exhaust file which seems to be the one with priority over engine sound file. Used a donald trump speech (lol) and there's the result. He sounds like a cheap chipmunk remix I don't know why does this happen, but it is not the encoder that's giving a corrupt file. This is car_026-exhaust.tmx file for those interested, the acceleration gin file is the last one so it's pretty easy to test modified audio files.

https://youtu.be/TCvde7XwN08

original sample:

152 elements
32khz
max rpm 6596
min rpm 1210

modified sample:

152 elements
32khz
max rpm 6596
min rpm 1210


Edit: shit I guess the pitch change is done by the game .exe and not done in the files and their parameters. I even tried using a lower pitched version of the speech but it sounds the same anyways. Different data for these audio parameters doesn’t work also
Or it could be that the gin file is pitched according to the high rpm tone which is a SNR audio file.
Strange thing is I can import these files to audacity but don’t know which format it is so I can’t modify these

EDIT 2: Yes sadly the pitch change is done by something else. Not the SNR audio files, not the tables in the header and not in the game database values, it is the exe doing it im 80% sure. fukkk


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