Updates: PS3 will no longer support lossless audio during 3D Blu-ray playback, following Firmware update v3.50.
CVG reader LordVonPS3 has clarified the move:
'PS3 will now playback 3D Blu-rays - as well as 2D discs - but when playing back 3D Blu-rays, it'll be at the expense of Dolby TrueHD and DTS-HD being converted to (lossy) Dolby Digital and DTS respectively.
Dolby TrueHD and DTS-HD are lossless compressed audio formats. For 2D Blu-rays, the PS3 decompresses these audio streams (in real-time) and outputs the sound as PCM (also lossless). Obviously at the moment it's either struggling to do that plus 3D at the same time, or perhaps the developer simply hasn't worked out how to do it yet. A future firmware update may sort this out, but for a first stab at showing 3D Blu-ray movies, it's not a bad update.'
PSU reports that when Dolby TrueHD is selected as the audio format, audio will be output in Dolby Digital during playback of Blu-ray 3D content.
As for DTS-HD, audio will be output in regular DTS.
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