How do I extract audio files?

[SealTart]

I'm trying to extract audio files from Azur Lane, specifically the voice lines. I don't know where the files are stored and I'm not sure if I'm extracting from the right folder.

AssetStudio

I've tried to use the AssetStudio program to extract them as well, but I am unsure as to what files/file extensions actually contain the audio (voice lines). When the file exports finished, I don't see any files with file extensions that contain audio (or I don't know which ones contain audio).

Note: I can't create an issue in AssetStudio repository, so I'm creating it here as it is somewhat related.

I'm currently extracting from the Android -> data -> com.YoStarEN.AzurLane -> files -> AssetBundles folder through an Android emulator. I'm not sure which folder within the AssetBundles stated above contains the voice lines.

.obb:

There is also a related Azur Lane file in Android -> obb -> com.YoStarEN.AzurLane -> main.62016.com.YoStarEN.AzurLane.obb that is 1.53 GB and I am unsure if this may contain the audio files (voice lines). I'm not sure if there is a correct way to extract from this. I've tried changing the file extension to .zip and extracting from that but got files that all ended in .ys. Then I tried extracting from that and got some different files with extensions like .resS and files that don't have file extensions.

Final Remarks

If there are specific file types to look out for, naming patterns (for files), specific procedures to follow, or any information on this, please let me know. If there is a tutorial out there that you can point me to, that would be helpful. Any help is appreciated.

Note: no problems with extracting the live2d files. I'll like to pair them up with the voice lines/audio.