Originally Posted by Chris Gerhard
I love this thread. I continually read that Blu-ray and HD DVD, unlike DVD-A are not limited to 96kHz/24-Bit 5.1 and are capable of 192kHz/24-Bit 5.1 lossless audio. I can't find any proof of that anywhere including the official DTS site for DTS-HD MA, the Dolby Digital site and any of the Blu-ray player sites. The White Papers for the various formats I could find offer no proof and there isn't any software I can find that goes above 96kHz/24-Bit for 5.1.
Can somebody point me to a definitive statement on the issue? At 55, I don't think I could hear the difference in any event, but for academic purposes, I would like to read about it if true.
I have friends who work in feature film sound mixing. They say that 24-bit / 48kHz has been the standard for mixing and mastering for some years now. None are aware of any films being mixed at higher rates.
Most HD-DVDs and Blu-rays are currently down-converted to 16-bit / 48kHz, although that depends on the studio. Hopefully, more studios will keep it 24-bit like, say, Disney are (pirates of the Carribean on Blu-ray being an example).
My friends in the industry also claim that 24-bit offers obvious improvements over 16-bit, but that anything above 48kHz is usually a waste, as it's difficult to hear any improvement with most material, especially in a large auditorium.
Also, Chris, at 55 I'm sure you can still hear the differences, as long as you've treated your ears well. My Dad is 65 and can often out-hear me, and I've been very careful with my ears. The question is whether or not your sound system can reveal the differences - particularly your room and speakers!