SFX ripping/decoding/dumping features?

[Qaazavaca Qaanic]

sampling rate is usually 32000. there is the slight chance that they are using lower-rate audio for saving space.
I think it's raw packed gc-hardware-adpcm format. Not dtk-adpcm. (Both are hardware-accelerated.)
I don't know how the compression coefficients and starting values are stored, but I made a custom build of Dolphin a while ago that would dump that stuff in a more-or-less unusable format. You can't tell which sound effect uses which coefficients, etc.