24-Bit 192Khz audio, will it ever happen on Blu-Ray - High-Def Digest Forums
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Old 02-22-2011, 03:49 AM
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Default 24-Bit 192Khz audio, will it ever happen on Blu-Ray

I know space is limited on a BD but for those of us out there that dont really care about 5.1 channels of 16-Bit 48Khz of discrete surround sound. Is there any chance they will ever encode discs with 2 channel stereo 24-Bit at 192Khz? I thought that was high definition sound.
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Old 02-22-2011, 05:50 AM
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It is HD audio but so is 24/96 and other varieties. I have a couple with 24/192, music discs from 2L. "Ole Bull Violin Concertos" has 24/192 LPCM stereo and 24/192 DTS-HD MA 5.1. It also has 24/96 7.1 DTS-HD MA. The second disc is a hybrid SACD.

http://www.2l.no/pages/album/067.html

I believe there are several from this company, you can probably find them from my link if you are interested. If you mean movies, none that I am aware of but I know there are some other music discs from other companies with 24/192 stereo LPCM. Is there anyway a human can tell the difference between 24/96 and 24/192? Not in my opinion but many will claim to be able to.
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Old 02-22-2011, 06:06 AM
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Originally Posted by chris gerhard View Post
It is HD audio but so is 24/96 and other varieties. I have a couple with 24/192, music discs from 2L. "Ole Bull Violin Concertos" has 24/192 LPCM stereo and 24/192 DTS-HD MA 5.1. It also has 24/96 7.1 DTS-HD MA. The second disc is a hybrid SACD.

http://www.2l.no/pages/album/067.html

I believe there are several from this company, you can probably find them from my link if you are interested. If you mean movies, none that I am aware of but I know there are some other music discs from other companies with 24/192 stereo LPCM. Is there anyway a human can tell the difference between 24/96 and 24/192? Not in my opinion but many will claim to be able to.
I think it all depends on how transparent the system setup is. Are the amplifier/receiver and speakers of high enough quality to really get the most out of the signal. People forget that audio performance specifications are only valid under ideal conditions.
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Old 02-22-2011, 06:14 AM
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Originally Posted by JSmith View Post
I think it all depends on how transparent the system setup is. Are the amplifier/receiver and speakers of high enough quality to really get the most out of the signal. People forget that audio performance specifications are only valid under ideal conditions.
I have no doubt, even if I could tell the difference, my system would preclude my doing so but I don't think any controlled test will show that human beings can discern the difference with the best equipment. I will wait for the proof.
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Old 02-22-2011, 06:21 AM
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The source in the case of the Ole Bull concertos was DXD (352.8kHz/24bit). If the company is going to move to Blu-ray from SACD, I hope 192kHz/24-Bit PCM will be the source but experts in digital recording will have to confirm that would matter.
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Old 02-22-2011, 07:03 AM
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Originally Posted by chris gerhard View Post
I have no doubt, even if I could tell the difference, my system would preclude my doing so but I don't think any controlled test will show that human beings can discern the difference with the best equipment. I will wait for the proof.
Concurred...objective testing would be the only way to confirm with no doubt. Audiophiles are generally not trustworthy when they only rely on hunches and (non)blind listening tests.
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Old 02-22-2011, 08:20 AM
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Concurred...objective testing would be the only way to confirm with no doubt. Audiophiles are generally not trustworthy when they only rely on hunches and (non)blind listening tests.
Then we need a blind listening test. 300 audiophiles at least included in the study. Test using reference recording studio equipment under ideal conditions. Play 5 different pieces of music sampled at 24-Bit 96Khz and then the exact same 5 pieces of music sampled at 24-Bit 192Khz or vice versa and then write down which 5 pieces of music had which resolution.
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Old 02-22-2011, 11:49 AM
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ain't AKIRA a 24/192 disc?
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Old 02-22-2011, 08:58 PM
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ain't AKIRA a 24/192 disc?
Yeah, it is. That's why there's not a lot of extras to speak of for the blu ray.
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Old 02-22-2011, 09:10 PM
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The short answer: no.

There's no point. Movies recorded digitally are 48 kHz/24 bit. To get benefit from higher sampling rate, you need to have a very high quality analog source--so you're limited to movies made before about 1992. Even then the improvement is questionable.

For audio, recordings at generally made at 88.2 or 176.4 kHz, with more at the former than the latter. There are a handful of SACD recordings, but those are pretty sparse. Even then, 88.2 kHz is the standard for conversion from DSD, although some devices do go a bit higher when they convert to PCM.
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