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Thread: 24bit audio? |
    
Silver Member Username: Shane24
Post Number: 117
Registered: Mar-07
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| Posted on Wednesday, April 25, 2007 - 10:55 am: |
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I am aware that dvd-audio's and sacd are 24bit audio at around 196or197khz.., is the blue ray disc or hd-dvd although video disc are they also in terms of audio quality 24bit as well or are they higher? |
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Gold Member Username: Stu_pitt
Irvington,
New York
USA
Post Number: 1793
Registered: May-05
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| Posted on Wednesday, April 25, 2007 - 07:41 pm: |
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As far as I know there are no blue ray nor HD-DVD music discs. |
Silver Member Username: Sem
New York
USA
Post Number: 664
Registered: Mar-04
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| Posted on Wednesday, April 25, 2007 - 10:39 pm: |
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What audio codecs will Blu-ray support?
Linear PCM (LPCM) - up to 8 channels of uncompressed audio. (mandatory)
Dolby Digital (DD) - format used for DVDs, 5.1-channel surround sound. (mandatory)
Dolby Digital Plus (DD+) - extension of Dolby Digital, 7.1-channel surround sound. (optional)
Dolby TrueHD - lossless encoding of up to 8 channels of audio. (optional)
DTS Digital Surround - format used for DVDs, 5.1-channel surround sound. (mandatory)
DTS-HD High Resolution Audio - extension of DTS, 7.1-channel surround sound. (optional)
DTS-HD Master Audio - lossless encoding of up to 8 channels of audio. (optional)
Please note that this simply means that Blu-ray players and recorders will have to support playback of these audio codecs, it will still be up to the movie studios to decide which audio codec(s) they use for their releases.
From: http://www.blu-ray.com/faq/ |
Silver Member Username: Shane24
Post Number: 119
Registered: Mar-07
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| Posted on Thursday, April 26, 2007 - 04:36 am: |
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so i guess the audio of a blueray dvd movie would be higher compared to dvd whether an audio(dvd)or dvd-movie being 24bit.... |
Gold Member Username: My_rantz
Australia
Post Number: 1352
Registered: Nov-05
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| Posted on Thursday, April 26, 2007 - 06:45 am: |
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Huh? |
Gold Member Username: John_s
Columbus,
Ohio
US
Post Number: 1550
Registered: Feb-04
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| Posted on Thursday, May 03, 2007 - 12:58 pm: |
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quote:Please note that this simply means that Blu-ray players and recorders will have to support playback of these audio codecs, it will still be up to the movie studios to decide which audio codec(s) they use for their releases.
"By now a fair number of companies have introduced machines to play Blu-ray Discs. Having checked out a handful of them, including models from Sony, Panasonic, and Samsung, I can tell you that their features and capabilities vary widely. Sure, they handle high-def movies, but some also let you play videogames and connect to the Internet, as well as listen to DVD-Audio discs and Super Audio CDs. One area where they're all the same, however, is in their handling of high-rez soundtrack formats like Dolby True HD and DTS-HD Master Audio. At present, not one of the first-gen Blu-ray models (outside of Sony's PS3) provides built-in support for these new formats, instead delivering regular old Dolby Digital and DTS.
http://www.ecoustics.com/sv/2142
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New member Username: Kind2
Post Number: 1
Registered: May-07
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| Posted on Saturday, May 19, 2007 - 01:38 pm: |
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Blu-ray supports 24-bit up to 192kHz sample rate.
http://en.wikipedia.org/wiki/Blu-ray_Disc#Codecs
Blu-ray Discs support encoding in up to 24-bit/192 kHz for a maximum of six channels, or up to eight channels with at most 24-bit/96 kHz sampling
It appears that 27Mbps is the amount of bandwidth the audio can use. This is about 6 channels of 192kHz/24-bit audio. Its also can use 8 channels of 96kHz/24-bit audio. The bit depths can vary: 16, 20, and 24 bits.
See: http://www.blu-raydisc.com/assets/downloadablefile/2b_bdrom_audiovisualapplicati on_0305-12955-13403.pdf |
Gold Member Username: John_s
Columbus,
Ohio
US
Post Number: 1581
Registered: Feb-04
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| Posted on Sunday, May 20, 2007 - 05:58 pm: |
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The purpose of my previous post here is point out that, as Sem's post from blu-ray.com states, all advanced/lossless audio codec support is entirely optional on blu-ray players. It means nothing to talk about how much data a Blu-ray disc can hold if the machines that play the disc do not support the extra bandwidth that's possible on the format. What good is the entire Beatles catalog on one disc in lossless audio if there's no machine to play it on?
Moreover, what good is lossless movie soundtracks when major new releases don't have lossless audio tracks on them? For example, the newly released "Dreamgirls" Blu-ray disc (a movie that one would think could benefit by excellent audio support to compliment its reportedly state-of-the-art video quality) supports only DD/DTS 5.1. Of course with only DD/DTS available there's no PCM option either. Even though these tracks are at the maximum bitrate of 640 kbps for the format (vs. 384 or 448 kbps in practice for DD/DTS on DVD), this is still lightyears away from the lossless "Holy Grail" codecs hyped by the media.
The question now is the same as it was for DVD-A and SACD a few years ago: Will Dolby Digital TrueHD and DTS-HD Master Audio ever become mainstream? Just how intense is the general public's thirst for better audio and how much are they willing to pay for it? The answer to these questions may lie in Apple's recent announcement of selling 100 million of its iPod MP3 players.
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New member Username: The_seventh_taylor
Post Number: 2
Registered: Sep-07
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| Posted on Saturday, September 22, 2007 - 09:47 am: |
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Shane 24 wrote:
I am aware that dvd-audio's and sacd are 24bit audio at around 196or197khz.
SACD is actually 1bit audio at around 2.8 GHz (64x CD sampling frequency)... except when PlayStation3 outputs it because it converts it to 24-bit 176.4 kHz, for some unknown reason.
See http://www.ps3sacd.com/faq |
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Gold Member Username: Nuck
Post Number: 8736
Registered: Dec-04
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| Posted on Saturday, September 22, 2007 - 10:05 am: |
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Great post ST.
welcome to the forum.
Love the user name. |
New member Username: The_seventh_taylor
Post Number: 3
Registered: Sep-07
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| Posted on Sunday, September 23, 2007 - 08:50 am: |
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Thanks. Glad to be here.
Just a correction: the right URL is: http://www.ps3sacd.com/faq.html |
New member Username: Dantheman1425
USA
Post Number: 3
Registered: Apr-08
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| Posted on Wednesday, April 23, 2008 - 11:38 pm: |
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Thanks for the link ST.
Correction around 2.8Mhz |
