I have also noticed this. The PS3 game may have a Dolby Digital logo on the back of the case, but when I play it through my Onkyo 605, through HDMI, it shows "multichannel" on the Onkyo's display. It is this way regardless of the PS3's audio output being LPCM or Bitstream. Also, I have never played a demo which came to my receiver as Dolby Digital, but I will try DMC4. I had always assumed the "multichannel" was better than "Dolby Digital" on my Onkyo's display. Am I wrong?
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