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Saturday 16.8.2025 / 12:24
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afterdawn.com > forums > digital audio > audio > lpcm & multichannel surround
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LPCM & multichannel surround
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Posted Message
RhoXS
Newbie
_ 		9. October 2005 @ 18:11 _ Link to this message    Send private message to this user   
I have heard it said that an AC3 audio stream will "down mix" to two channel stereo.

Will a two channel LPCM stream "up mix" to multichannel surround?

I have a DVD with both streams and I must eliminate one or the other in order to make room when copying it. I would prefer to keep the LPCM stream as LPCM seems to be a higher quality stream. However, I do not want to lose the ability to drive a multichannel surround sound system as AC3-5.1 will do.
[ + quote]
diabolos
Suspended due to non-functional email address
_ 		10. October 2005 @ 16:24 _ Link to this message    Send private message to this user   
1) Yes, the LPCM stream is the higher quality stream. It is raw/uncompressed audio data.

2) No, the 5.1 suround can't be pulled out of a 2.0 LPCM stream like an analog "Pro Logic" sourround stream can.
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