Most BD people want lossless audio in the form of uncompressed PCM. Something when i was writing that made me think LPCM was the same. It apparently is not. THanks for telling me so I don't make that mistake in the future
LPCM is a waste of space. Every bit of mux capacity; and every byte of storage used up adds up.
Just to throw some raw numbers out.
LPCM @ 24/48K/6 = ~6.9Mbits/sec; > 6GB for 2 Hour Movie
LPCM @ 24/48K/8 = ~9.1 Mbits /sec; > 8GB for 2 Hour Movie
LPCM @ 24/96K/6 = ~13.8 Mbits/sec; > 12GB for 2 Hour Movie
LPCM @ 24/96K/8 = ~18.4 Mbits/sec; > 16GB for 2 Hour Movie
These numbers are per soundtrack. The space disappears quickly on titles with multiple lossless soundtracks.
Compare that with Dolby TrueHD for the same:
24/48K/6 = ~3.4 Mbits/sec ABR ; ~3GB for 2 Hour Movie
24/48K/8 = ~4.7 Mbits/sec ABR ; ~4.2 GB for 2 Hour Movie
24/96K/6 = ~6.2 Mbits/sec ABR; ~5.6 GB for 2 hour Movie
24/96K/8 = ~8.3 Mbits/sec ABR; ~7.5 GB for 2 hour movie
This just doesn't compute to me. An additional 3-9GB is a fair amount of space to place HD extras when they are available.
But that's just me thinking objectively about the subject.