[Turambar]

has it been done?

it could save a lot of memory in-game, could it not?

[DaBrain]

First, there will be a bit quality loss. Then I'd have to include the oggs in the MV pack (bigger package...).
And finally everybody would have to delete the stu_fs2.vp. (Only 165 MB anyway.)

Too much work, not enough gain and way too risky.

[Topgun]

I might do it for fun.

[phreak]

has it been done?

it could save a lot of memory in-game, could it not?

Briefing voices are unloaded once you enter the mission, so all it would really help is mission load time, and probably not by much.

[WMCoolmon]

There's not much point. All of the voices are already compressed, so you'd mostly just be making the sound quality worse.

[bruce89]

Utterly no point as there would be no quality gain. The original WAV files are uncompressed (obviously), but they have a low sample rate (11050 Hz mostly) and have a 4 bit sample size. They are rather low quality as a result.

An idea I had was to add Speex support as this would be more suited to voice compression than Vorbis.

Out of interest, an original voice file from FS2 can be compressed 4 times with Speex without any obvious difference. (although this may be because the original files are bad to start with). This was with Quality 3, Complexity 3 and VAD on. (I'm open to better setting suggestions.)