One of the design documents hosted on this site mentions:
But so far I've not had much luck finding anything that can convert the encoding reliably; Audacity can load many of the files as 8-bit PCM, but with a ton of noise, most likely because PCM is uncompressed while the format may have some basic compression involved; clearly not enough to prevent PCM decoding from producing recognisable sound, but somehow distorting the end result.Audio Actors are Audio Interchange Files (AIFF) that are interactively played back. Audio actors are 16b @ 44.1 kHz samples compressed @ 3:1. Audio actors are ~300kB.
The reason I'm hoping to find out is because I'd really like to listen to the awesome music from this game in as high a detail as possible; since no soundtrack was ever released, all we have is an audio "rip" which is actually just a recording of the music from various points in the game (anywhere without any other sound-effects to disrupt the recording), but it's not of the best quality.
I've tried a few times to reach out to Mark Morgan (the composer) in case he might know if there are any original source files in existence, but so far haven't been able to get a response. Anyway, I'm going to keep trying with my trial and error approach, and maybe read up on some of the AIFF compression schemes to see if one of them might work, but if anyone else has any knowledge about these files it'd be much appreciated!