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Old 2007-08-10, 09:20 PM
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tgunn2760 tgunn2760 is offline
 
Join Date: Sep 2006
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Re: Is decompressed AC3 lossy?

Quote:
Originally Posted by jameskg
I'm confused.. if you decompress AC3 (I assume you mean to 48kHz WAV), you don't get back the audio data that was discarded when it was compressed to AC3.

It should sound the same. Unless you then RE-encoded to AC3 again.. THAT would sound terrible.
Yes, the AC3 was decompressed to wav, when I dropped it into Tsunami DVD Author it said "LPCM" mono, as I deleted one channel and doubled the volume.
(as Bob the Guru suggested. On account of this I wondered if the original audio was mono.)

The full file was 1.2 GBs, the mono about 585 MBs, it fit perfectly onto a DVD5, with motion menu it came to 4.27 GBs, and sounds great.

But you do get back some of the compressed data. The AC3 audio is about 1/4 of the LPCM.

Anyway, KK knows what this is all about, so if says the definitive version is being worked on, expect something really exceptional to happen. The video on this DVD is excellent, and I expect the audio will be too.

Thanks for replying.
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