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Hello!

I'm trying to extract the Asphalt 9 soundtrack from older versions of the game (0.4.3c and 1.5.3a).
After extracting the .obb archive, I can see 2 files of significance to me: music.voxpack and music.voxdata.

The music.voxpack file is openable with Game Extractor and can extract every file in there. The files are some kind of Musepack SV8 compression (possibly proprietary or a combination with VOX ADPCM?), but, when opened and played back, they sound very different compared to the game's audio. I believe the game applies some algorithms on these files in real-time or the Musepack algorithms have been slightly altered.

The music.voxdata file is not openable with Game Extractor and I cannot figure out what can open it. I'm hoping this music.voxdata file contains some information regarding the algorithms or maybe some equalizer the game is applying.

Here is the music.voxpack file and the music.voxdata file, both on Google Drive.

If anybody can shed some light, it would be appreciated.

Disregard this.

The .mpc files are correctly opened by Foobar2000 using vgmstream plugin. From there, they can easily be converted to any format.