Converting a non-standard .wav file?

[sammeister8]

I ripped some odd .wav files from the iOS game Liberation Maiden. The game seems to use some sort of .wav format that I can't figure out how to open or convert. I did some research on my own, and nothing I applied seemed to work. Help would be greatly appreciated... here are a couple of the sound files: https://www.dropbox.com/sh/37rejtykhg1djte/2kb0s4nnXt

[hech54]

I ripped some odd .wav files from the iOS game Liberation Maiden.

How?

[Cornucopia]

OK, you don't say how you ripped this and that is very important to how it is what it is now.

What I do see:
MediaInfo shows a WAV/RIFF header with, what it says is listed as, an MP2 (aka MPEG Layer2) audio stream embedded within. Strangely enough, it says it's using 2ch 28kHz (very unlikely samplerate) @ 896kbps (very very unlikely bitrate).

But that is NOT what's in it.

There are tools that can strip out a wav/riff header to give you the unadorned raw stream. I used "riffstrip".

Once extracted, though, it clearly shows that it is NOT an mp2. It does NOT play in any regular players (and my own legit mp2's DO) and, AFAIK, isn't recognized as ANY type of audio media file, whether MediaInfo or any other player or editor (and I've got scores of them to try). Even opening it as raw/lpcm with the channel, samplerate, & bitrate specs suggested only provides trash noise. It does NOT have any standard MPEG stream headers.

So, either this is a spoof with intentional garbage injected, or a virus masquerading as an mp2, or you (or someone you relied on) did an inaccurate job of ripping/converting the file.

More info, please, if you want anyone to continue persuing this...

Scott

[sammeister8]

Thanks for the quick feedback.

I ripped the files by renaming the .ipa app file to .zip and extracting the contents. The .wav files were in the game's sound folder, I haven't modified them in any way.

[El Heggunte]

Then probably only the game itself knows how to decompress such files.
MediaInfo says the TwoCC number is "51", and according to a Google search,
0x51 stands for "RT23 or PAC"
Besides, those WAV files are definitely non-compliant, because the so-called "FACT chunk" is missing

EDIT: FWIW, wiki.multimedia.cx/index.php?title=Twocc says:

0x0052 InSoft RT24 (ACM codec is an alternative codec)
0x0053 PAC InSoft, Inc.