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Go Back   Blu-ray Forum > Audio > Audio Theory and Discussion


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Old 03-02-2008, 07:12 PM   #1
richieb1971 richieb1971 is offline
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Default Blu-ray audio format question.

Can someone list in order from best to worst all the audio formats currently supported by Blu ray?


Thanks,

Richard.
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Old 03-02-2008, 07:27 PM   #2
Gremal Gremal is offline
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Well, this is supported by the PS3, not Blu-ray per se.

SACD (DSD at 2.41 MHz)
PCM (24-bit at 192 kHz)
PCM (24-bit at 96 kHz)
PCM (24-bit at 48 kHz)
TrueHD
DTS HD MA
DTS HD
DTS
CD (PCM 16-bit 44.1 kHz)
DD
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Old 03-02-2008, 07:31 PM   #3
beakergeek beakergeek is offline
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Default Best Blu-ray format

There really is not a across the board best format. Always look at bit-rate and sampling frequency. For linear PCM this is usually given like (48khz, 16 bit). For dolby TrueHD and DTS-HD Master you have to look more closely because they don't always tell you on the box. Best bit-rate/sampling frequency available so far is 96khz/24bit like on the blu-ray Dave Mathews disc encoded in Dolby TrueHD at 96khz/24bit. In general, best to worst: DTS-HD Master, Dolby TrueHD, Linear PCM, DTS, Dolby Digital.
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Old 03-02-2008, 07:53 PM   #4
MatrixS2000 MatrixS2000 is offline
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Quote:
Originally Posted by Gremal View Post
Well, this is supported by the PS3, not Blu-ray per se.

SACD (DSD at 2.41 MHz)
PCM (24-bit at 192 kHz)
PCM (24-bit at 96 kHz)
PCM (24-bit at 48 kHz)
TrueHD
DTS HD MA
DTS HD
DTS
CD (PCM 16-bit 44.1 kHz)
DD
My only change is I would rank PCM 16/44 just under DTS MA as it is lossless where everything below is not.
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Old 03-04-2008, 04:03 AM   #5
Clark Kent Clark Kent is offline
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On Blu-ray movies always look for lossless soundtracks. These can come in only three types: PCM, Dolby TrueHD, DTS-HD MA. Anything else is a lossy soundtrack and inherently inferior to a lossless soundtrack.
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Old 03-04-2008, 04:35 AM   #6
emm7th emm7th is offline
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Quote:
Originally Posted by beakergeek View Post
best to worst: DTS-HD Master, Dolby TrueHD, Linear PCM, DTS, Dolby Digital.
The proper order is:

best to worst: LINEAR PCM, DTS-HD Master Audio or Dolby TrueHD, DTS, Dolby Digital.
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Old 03-04-2008, 09:39 AM   #7
chriharr chriharr is offline
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Quote:
Originally Posted by emm7th View Post
The proper order is:

best to worst: LINEAR PCM, DTS-HD Master Audio or Dolby TrueHD, DTS, Dolby Digital.
Bingo spot on.


I thought PCM can be either 16 or 24 bit at 48KHz (up to 7.1 ch) and 16 bit @ 96KHz (up to 5.1 ch)

am I right, or have I mixed something up.

appreciate any answers.
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Old 03-04-2008, 10:07 AM   #8
HDJK HDJK is offline
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Quote:
Originally Posted by chriharr View Post
Bingo spot on.


I thought PCM can be either 16 or 24 bit at 48KHz (up to 7.1 ch) and 16 bit @ 96KHz (up to 5.1 ch)

am I right, or have I mixed something up.

appreciate any answers.
Not quite. You can go 24/96 for 5.1, I think even 7.1 and 24/192 for stereo. I have to check the 7.1 part though.
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Old 03-04-2008, 02:20 PM   #9
emm7th emm7th is offline
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Quote:
Originally Posted by HDJK View Post
Not quite. You can go 24/96 for 5.1, I think even 7.1 and 24/192 for stereo. I have to check the 7.1 part though.
Yes you are right. Blu-ray supports up to 7.1 24/96 and 2.0 24/192 PCM... though, there still aren't any 2.0 192KHz-24bit audio on any BD title that I know of - I sure want one...

Last edited by emm7th; 03-04-2008 at 02:29 PM.
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Old 03-04-2008, 02:28 PM   #10
emm7th emm7th is offline
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The bandwidth for:
2.0 24bit 192KHz is 9.216Mbps
5.1 24bit 96KHz is 13.824Mbps
7.1 24bit 96Khz is 18.432Mbps
these are high resolution audios that will match or exceed (in the case of 7.1 24/96) the capabilities of DVD-Audio or SACD (considering an equivalent of multi-channel DSD to PCM)... choosing the highest resolution possible, however, could compromise the video quality.
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Old 03-04-2008, 02:39 PM   #11
emm7th emm7th is offline
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And it's really nice for Blu-ray to have won the format war because we Audiophiles and/or Videophiles can enjoy the optimum COMBINED Audio & Video experience (with 54Mbps max bandwidth). I can't imagine that with the other format's maximum bandwidth of 36.55Mbps - insufficient indeed.
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Old 03-04-2008, 02:58 PM   #12
Brian Cash Brian Cash is offline
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Quote:
Originally Posted by emm7th View Post
And it's really nice for Blu-ray to have won the format war because we Audiophiles and/or Videophiles can enjoy the optimum COMBINED Audio & Video experience (with 54Mbps max bandwidth). I can't imagine that with the other format's maximum bandwidth of 36.55Mbps - insufficient indeed.
yeah it has the capabilities of that much bandwidth but have we seen yet on a blu ray
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Old 03-04-2008, 03:51 PM   #13
MatrixS2000 MatrixS2000 is offline
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Quote:
Originally Posted by emm7th View Post
COMBINED Audio & Video experience (with 54Mbps max bandwidth). I can't imagine that with the other format's maximum bandwidth of 36.55Mbps - insufficient indeed.
#1 reason why I picked Blu-Ray.
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Old 03-04-2008, 05:56 PM   #14
Ben123 Ben123 is offline
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For those that have a BD player that can playback DTS-HD/MA, I just wondering how much better is the lossless sound of DTS-HD/MA compare to the 1.5Mbs DTS "Core" soundtrack? Big difference? Or only audible for those with "golden ears".

I'm picky on sound and comparing Dolby TrueHD/PCM lossless with Standard Dolby Digital is a world of difference. But listening to the 1.5mps DTS soundtrack sounds quite good to me on the few Fox BD disc I have. I can't really compare bec I don't have any disc with DTS-HD/MA and PCM/TrueHD in one disc.

BTW, I have a PS3 and it doesn't support DTS-HD/MA yet. I'm thinking of getting a standalone player just to get DTS-HD/MA.
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