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Hi,

we’re trying to add 5.1 multichannel music into our game (a PS3 game) and we’re having some problems regarding the audio format we should use. All of our existing musics are separate .mp3 files and our sound effects are done using fmod designer.

The first thing we tried was to take a valid 5.1 MP3 (done using the Fraunhofer encoder and Winamp at least can play it properly) and play that. The PC version plays the front channels in the back and the PS3 version doesn’t play anything in the back (so it seems like 5.1 MP3s are not supported?). This MP3 was around 7.5mb and was 5min 30secs long. This the amount of space we’d like to use per song as our game is a downloadable title. This MP3 was detected as a stereo MP3 by designer, btw.

Then we tried making a multichannel FSB file. We used the designer to generate the FSB file from a 6 channel WAV source (same song) with MP3 as the format. With the default quality setting (50) the FSB was 39mb (we tried ADPCM as well which was around 53mb). This is way too much for a single song as we have 6 songs to include. Even with the quality set to 1, the FSB was around 18-19mb (and it sounded bad).

So what is the best format/way to include 5.1 music? We’d like it best if the "proper" 5.1 MP3 format was supported as we could use existing encoders and the size is acceptable to us.

Thanks!

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I think the issue here is that fmod’s fsbankex encoder encodes all 6 tracks as individual mono tracks. If we switch this to stereo pairs, it should halve the size of each track.

We’ll look at doing this for next week’s release.

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That’s awesome. It would be extra awesome if we could import the interleaved fsb into Designer. If one were so inclined that is… 😀

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