Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

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here's how it works

Posted by Joe Murphy Jr on August 26, 2008 at 19:50:39:
The following pertains to the lossless codecs and transmission via HDMI:

Where the lossless codecs are concerned, they have to be decoded to PCM somewhere. The decoding can happen in the player or in the receiver/processor. If the player does the decoding, multiple channels of PCM are output to the receiver/processor via HDMI. If the player is capable of sending the compressed track over HDMI (not all players can do this), then it's up to the receiver/processor to do the decoding of the compressed track to PCM. Not all receivers/processors can decode the new lossless codecs. There are also players which can do both (but not at the same time), decode internally and bitstream (send the track over HDMI without decoding it first).

The PS3 will decode the Dolby TrueHD soundtrack from its losslessly compressed state (similar to a zip file for computers) into multiple channels of PCM (similar to what's on a CD, except more channels). The multiple channels of PCM can then be transmitted over the HDMI cable to your Denon receiver. The receiver will show something like Multi-Channel PCM on the display. It won't show Dolby TrueHD because the PS3 has decoded the compressed data, which is the Dolby TrueHD soundtrack, into PCM.