Sound effect replacements

[[Unknown]]

The PSP has lots of ways to output sound, but one that games typically use for sound effects is an ADPCM VAG. It's not very high quality, but it's simple. It's sometimes used for music, and usually used for sound effects.

It would be fairly easy to "replace" these, if people are interested. Replacing other audio (largely ATRAC3/ATRAC3+, video, or rarely MP3) is possible but more tricky. A few games also use PCM directly, which is rare but could also be replaced this same way.

The most trivial replacement implementation would:

* Save PCM s16le samples with hash filenames, like texture replacements.
* Read back in the same format for the replaced audio.
* Require the same length and loop settings.
* Expect the same bitrate as the source (e.g. 22/mono or whatever.)

A more advanced replacement implementation could:

* Use a different length and have tune-able looping (this means some replacements could break games and would need to be tested.)
* Potentially load from or even write to an encoded source, e.g. mp3.
* Allow stereo (definitely some complexity...)
* Allow 44.1k in the case of 22k/etc.

Does "sound effect replacement" sound interesting to people? How much would it be used and just how much would the more advanced things be used?

Note: applying the same things (like stereo) to ATRAC3 would be much more complex. But it is doable for VAG, so that's the only one I'm asking about.

-[Unknown]