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AAC Chosen For DVD-ROM Section Of DVD Audio Discs

sootman writes "According to a news post at HighFidelityReview.com: 'The DVD Forum has chosen AAC for the DVD-ROM zone of DVD-Audio discs - the inclusion of a low-resolution (lossy) track suitable for solid-state and portable devices has long been championed by DVD-Audio figureheads such as Dolby's John Kellogg as a way of enhancing the value of the format to all listeners, not just those interested in its high-resolution potential. The selection of AAC came after a number of competing formats were proposed; they included MP3, ATRAC and Microsoft's WMA. Additional formats, such as [Ogg Vorbis] for example, were not put forward for consideration.'"

21 of 432 comments (clear)

  1. anything about CSS by anandpur · · Score: 2, Interesting

    will it be protected by Region Code and CSS??

  2. What does this mean for existing equipment? by Scott+Lockwood · · Score: 4, Interesting

    Is this just a matter of updating the firmware and drivers, or do I yet AGAIN have to buy new equipment?

    --
    But this is slashdot. A slashdoter who didn't build his own computer is like a Jedi who didn't build his own lightsaber!
    1. Re:What does this mean for existing equipment? by Anonymous Coward · · Score: 2, Interesting

      Obviously some idiot moderator didn't realize you were joking.

      In case you folks missed it -- this applies to DVD-ROM formats, which is just a simple filesystem. It's all done in software from there.

  3. That's nice by Effugas · · Score: 4, Interesting

    DVD-Audio is dead, AC3 w/ normal, copyable DVD's has won the day.

    Something about that whole "anyone can master it" thing really excites the hordes of audio engineers that I know. "Hi, ten people will be allowed to work with this" technology tends only to be worked with by ten people.

    --Dan

  4. Who cares? by October_30th · · Score: 1, Interesting
    If the media is copy-protected (i.e. I can't rip it into a format of my choice) I will not buy it.

    I have not bought a single music CD since the crippled CDs appeared on the markets.

    --
    The owls are not what they seem
    1. Re:Who cares? by October_30th · · Score: 2, Interesting
      Then return the CD to the store because it is defective.

      I've tried it three times. It seems like the shops over here won't refund it without a fight and ad hominem attacks muttered under one's breath ("I bet you pirated the disc already...").

      I'm not going to waste my hate on the morons at the cash registers anymore. I'd rather not buy the CD at all. It hurts their sales figures all the same.

      --
      The owls are not what they seem
  5. Codec cracking by Stonent1 · · Score: 4, Interesting

    Well assuming that you will be playing this audio under windows, what stops someone from writing a "fake" audio card driver that does nothing but dump audio into a wav file?

    1. Re:Codec cracking by NotoriousQ · · Score: 3, Interesting

      signed driver requirement?

      --
      badness 10000
    2. Re:Codec cracking by pla · · Score: 2, Interesting

      Well assuming that you will be playing this audio under windows, what stops someone from writing a "fake" audio card driver that does nothing but dump audio into a wav file?

      I don't think you "get" it...

      Thanks to the Big Boys involved here doing their best to lock out the actual consumers, your PC will never even see the raw DVD-A data, only the lossy-and-DRM'd AAC track.

      However, even if you can get to the "real" audio tracks, you'll need signed drivers to decode them. Still theoretically spoofable, but good luck - That counts as a feat comparable to cracking the XBox key.


      So, where does that leave us?

      Buy a pair of cheap soundcards (the ADC and DAC quality don't matter in the least). Tap the digital input off card #1's DAC, and send it to the output of card #2's ADC (you'll probably need to cut the "real" output traces on card #2). Presto, you can digitally sample, from card #2, any audio going to card #1.

      Who needs an "analog hole", when we still have trivially exploitable digital "holes"?

  6. Re:Great... more lock in to Apple by Amiga+Lover · · Score: 1, Interesting

    You can quite easily rip to AAC without DRM.

    You can, but this isn't a case of ripping from pure audio to AAC, this is supplier provided AAC, which no doubt will have DRM.

    How many DRM players of AAC are there? One. iTunes. There is no doubt in my mind the big players behind Apple have swindled their way into this one too, and swayed decisions to use AAC.

    So in future when AAC is the only way you can buy Discs of music you HAVE TO USE ITUNES. That sucks, and closes out everyone else in the market. And people try to say Apple isn't a monopoly.

  7. Re:It's better then WMA by drinkypoo · · Score: 1, Interesting

    Cheer Microsoft's loss, but the decision is still a loss for people in general. OGG is open and it works. And DRM can always be layered on top so that when you manage to remove it :) then you can more easily operate without it. Just like CSS :)

    --
    "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  8. Re:*crickets* by Anonymous Coward · · Score: 1, Interesting

    This is a case of having an answer you want 1st, and then doing a "study" to prove it. Notice WMA wasn't considered early on, and no one compared the sound quality.

  9. And what's funny is... by Ayanami+Rei · · Score: 2, Interesting

    it's just as easy to bolt DRM onto Ogg's container format as it was for AAC. In fact, there was an article on Slashdot not too long ago about a company who is selling a toolkit that implements exactly that.

    --
    THIS THING CAN TURN ON A DIME, MACROSSZERO STYLE ALSO FUCK BETA, ~NYORON
  10. Re:Shame... by The+Lynxpro · · Score: 1, Interesting

    "The only reason I buy CDs at the moment is because it's not compressed, I can encode it into my format of choice - whatever that may be..."

    How is an audio CD not compressed music? By its very nature, that being digital, the music is compressed.

    --
    "Right now, somewhere in this world, Scott Baio is plowing a woman he doesn't love," - Peter Griffin, *Family Guy*
  11. Re:*crickets* by kommakazi · · Score: 2, Interesting

    More like they were smart and probably didn't want to feed 'the beast' more $$.

  12. Re:It's better then WMA by Animats · · Score: 4, Interesting
    When they (Caterpillar) released their first model, the next 10 years were filled with constant innovation, but they eventually reached a point where the basic design was so solid, your basic earthmover looks the same as it did 20 years ago.

    Actually, no. Caterpillar's line has changed drastically in recent years. The big earthmoving tractors even look different, with elevated drive sprockets. The rubber-tracked Challenger agricultural tractor looks like nothing ever seen on a farm. Most new Caterpillar machines have computers on board, and they play a much more active role in driving than car computers. Joystick control of multiple axes is common (although many machines have a hydraulic joystick system, not a computer-controlled one). GPS-based automatic driving is available for farm tractors.

    There's continuous progress in heavy equipment. The field has not stagnated. "High tech" now works well enough to be trusted in tough environments like mining and construction. Everything there has been powered for decades, but now there's more smarts behind the power.

    Even "mature technologies" like locomotives continue to improve. The latest generation of locomotives have servomotor-type control of all the traction motors, so they all stay in sync and there is no wheel slip. Multiple engines synch up, so they all pull evenly. Helps get all those imported products from the Port of Los Angeles over the Sierras.

  13. Who cares? by sterno · · Score: 2, Interesting

    What I'd like to know is why the Ogg people, or anybody else, for that matter, would care what was chosen? They could have chosen to use morse code for all it matters, since nobody's buying these discs. The fidelity of these discs is indistinguishable to 98% of humanity, and the additional features are irrelevant.

    --
    This sig has been temporarily disconnected or is no longer in service
  14. Re:What the? by Reducer2001 · · Score: 2, Interesting
    Sorry for posting a link that points to something useless! Here's a link to a forum that discusses this very topic, better than I could hope to.



    http://forums.afterdawn.com/thread_view.cfm/7131 0

    --
    When you get to hell -- tell 'em Itchy sent ya!
  15. Re:Foaming Ogg Vorbis freaks! by dasmegabyte · · Score: 2, Interesting

    You aren't looking in the wrong places...you're just not willing to pay to get to the right ones.

    There are, for example, hard disc based players which allow you to store your CDs in uncompressed formats like FLAC. They're well over $1000, but they're out there and they often have really cool interfaces. Some of your "network" players support FLAC for much less. Check out a Hi-fi mag, they'll have a shoot out every few months on component digital audio players. The iPod will let you store your music uncompressed, but you'll kill your battery life pretty good. I tried it for a while with my Tenacious D sets, but couldn't tell the difference between that and AAC 160 to justify the 8x size difference.

    There are a number of ruggedized laser printers. They're in the $800 range.

    And as for a super clear cellphone...you may not be able to find it, but you probably wouldn't want to pay for it, anyway. Doubling the bits transferred for digital traffic would require at least doubling the number of antennas, or doubling their effectiveness. Either way, it would require raising the prices for the outlay...and when people are willing to get fuzzy audio on their phones if it means $10 less per month (which they were...remember the switch from Analog to Digital), they'd be crazy to do it.

    --
    Hey freaks: now you're ju
  16. Re:DVD-A is dead for more than just that by ikewillis · · Score: 5, Interesting
    And the "superior sound quality" of both DVD-A and SACD is well outside the range of human hearing.

    Okay, before we talk frequency response let's talk sample precision. The biggest limitation of 16-bit samples is an effective 98dB of dynamic range. Today's audio engineers aren't making effective use of the CD's dynamic range, and the reality is that compressors are still being utilized despite the CD being the supposed answer to this problem, which was of course much more pronounced in the days of vinyl. I'd say the fact that compressors are still being utilized is indicative that 98dB is simply not enough for the way all music is currently being engineered, not just for orchestral recordings but for rock and other genres as well. The two solutions to this problem are a better audio engineering process (i.e. better training for audio engineers), or updating the technology to resolve the issue. I'll tell you now... the former is simply not going to happen, and I see the latter as the only practical solution.

    A 24-bit system offers 146 dB of dynamic range. While this seems like something which would only appeal to audiophiles who insist on absolute perfection in their orchestral recordings, the truth is that audiophiles tend to prefer vinyl even though any vinyl, even a 78 RPM record (which has a dynamic range of ~75dB) will actually have worse dynamic range than a CD due to compromises made in the vinyl engineering/cutting process. So who then benefits from greater dynamic range? The answer is everyone... 146 dB of dynamic range is more than enough to eliminate an audio engineer's need to use compressors except in the case of the extraordinarly inept. While yes, 98 dB should've been enough as well, today's audio engineers are simply failing to make use of it properly. It's sad that a technological problem is needed to address the ineptitude of today's audio engineers, but the ultimate argument is that it's ridiculous to impose unnecessary constraints on audio engineering if better technology is capable of removing them.

    This is all covered quite well in this article. And here is another article which provides support for a simple claim: uncompressed recordings sound better.

    In terms of frequency response, yes, human hearing extends only to 20kHz, and the Red Book stipulates that the glass masters of all CDs should be produced by passing the final cut through a 20kHz lowpass filter (the theoretical maximum frequency response of a CD is ~22kHz). What this process ignores, however, is that higher frequencies, while inaudible, are still tangible. While this area hasn't been extensively studied and is much harder to quantify, the tangibility of a live performance versus a recorded one is one of the key distinguishing characteristics, and while most of this tangibility typically comes from the bass side of things and not the treble, simply approaching the audio engineering process from an entirely psychoacoustic perspective will leave you with sound drastically different from the live performance regardless...

  17. Re:WMV9 provably superior to DivX HD by Anonymous Coward · · Score: 1, Interesting

    A few facts:

    M$ is trying to back-door WM9 video codec into
    open standards via SMPTE (as opposed to ISO or ITU,
    who govern MPEG and H.26x respectively.)

    There's a lot standing in M$' way -- as in they've
    infringed on many patents in WM9. And now many
    of the the patent-holders know it.

    H.264 (aka MPEG4-AVC) is not going to be royalty-free.
    The Sony/Philips/Mitsu/Thomson/etc. patent
    factories are going to get their quarters from
    H264 adoption.

    And if blue wins, it'll be MPEG-2 and those
    same folks will get their quarter anyway.
    Anyone here ever heard of MPEG-LA? MPEG-2 ain't
    free.