Slashdot Mirror


More on DVD-Audio and SACD

Spock the Baptist writes "This article at CNN covers the drive of manufacturers to get the public to convert from the CD format to two relatively new formats, DVD-Audio, and Super Audio Compact Disk. The manufacturers cite the superior audio quality, and 3-dimensionality of the new formats' reproduction as the reasons for customers to embrace these formats. The article also goes on to say: "An added bonus for record companies and retailers, who are engaged in a battle against piracy, is that the relative complexity of DVD-Audios and SACDs makes them much harder to copy. At the same time, that might turn some consumers off the format.""

22 of 546 comments (clear)

  1. players by dollargonzo · · Score: 5, Interesting

    what about hardware players? do they already have them? unlike compressed and lossy formats like mp3 and ogg, these are formats people are more likely to carry around and play on hardware players, as opposed to digital copying. so...why switch when the players are expensive and the gain is minimal?

    --
    BSD is for people who love UNIX. Linux is for those who hate Microsoft.
  2. CD's are good enough and cheap. by WittyName · · Score: 5, Interesting

    I do not need new hardware, or need to buy new copies of all my music.

    I would like to be able to buy compilation disks with ALL of a groups albums on it, at CD quality, though..

    --
    The law is a weapon of the government, not a protection for the likes of you. Surely you understand that.
    1. Re:CD's are good enough and cheap. by MindStalker · · Score: 3, Interesting

      One of the DVD music formats will play on almost all DVD players, its just the dolby digital 5.1 sound stream with no video. And your old player will play your CDs too, so no forced change really. I could see this taking off if the sound quality is supporior.
      The other one marketed by sony, plays only a special devices, which do play DVD movies and CD audio, but WON'T play this simple DVD music format (not quite sure how it recognizes it versus a standard DVD but I'm sure it wouldn't be that tricky to say if video DNE don't play) Anyways, Which do you think will catch on?

  3. Copying by Anonymous+DWord · · Score: 5, Interesting

    Depends on what you want. All of the SACDs I've seen have an extra track that's CD quality, and plays in your standard CD player. That'll be the biggest help for adoption - you can buy a bunch of these now, and when you upgrade your player, your collection is upgraded automatically at the same time.

    Copying isn't a problem though - although you just get the CD quality track. I've already backed up a few, and it's fine for, say, your car if you don't want your discs ripped off. I don't really need 5.1 sound in my car anyway.

    --
    "If he thinks he can hide and run from the United States and our allies, he's sorely mistaken." Bush on bin Laden
  4. Bullshit technology by Jeppe+Salvesen · · Score: 4, Interesting

    This technology is complete, utter bullshit. Regular DVD audio tracks are just as capable of reproducing high fidelity music as this SACD and DVDA crap. DVD originally stood for Digital Versatile Disc. It has the needed capabilities and sound quality to function as the next generation high fidelity sound source.

    These greedy bastards just want to suck an extra, uneeded device from us as well as reintroduce copy protection that ignores fair use.

    I will ignore those SACDs and DVDAs until they are digitally copyable so that a scratch in my favorite record/song no longer will set me back 15 to 20 bucks.

    --

    Stop the brainwash

  5. Headphones? by Anonymous Coward · · Score: 4, Interesting

    I listen to most of my music through headphones. They don't disturb other people (normally) like speakers do and they generally have a better response curve than the most expensive speakers. How is 5 channel sound going to improve my experience when headphones are limited to two channels?

  6. Buy it for your pet bat. by wunderhorn1 · · Score: 5, Interesting
    Sure, DVD-Audio sounds better... to your pet bat. Otherwise, the 44.1 kHz sampling rate more than covers the frequencies our ears are capable of hearing, and with a greater dynamic range than LPs. Hello? No human could hear 100kHz frequencies, even at ear-splitting dynamic ranges over 120dB, *even* if they could afford the speakers to reproduce them.

    These new formats are ploys to sell new hardware and foist copy-protection on us, at higher prices. Do us all a favor and don't buy into this crap.

    --
    Karma: Bored. (Thinking about resurrecting the "Anyone else is an imposter" joke.)
    1. Re:Buy it for your pet bat. by John+Whitley · · Score: 3, Interesting
      No human could hear 100kHz frequencies, even at ear-splitting dynamic ranges over 120dB,

      Not this noise again! The point of having higher resolution is NOT for your freaking pet bat. There are two primary reasons that improved fidelity may result. Both of these reasons relate to various characteristics of the high resolution formats, either Sony's DSD or 96kHz/24-bit PCM on DVD audio. (FYI, DSD == Direct Stream Digital, the moniker for the SACD modulation format, which is different from PCM digital audio.)
      1. Recording, production, and mastering processes can be made easier due to the increased dynamic range and headroom. E.g. the recording engineer has lots of room to play with record level settings, without having to be neurotic about that last few dB of gain to get maximum dynamic range in the recording. Production and mastering have more numerical headroom for mixing, effects, etc. It's also easier to avoid audibility of certain aliasing artifacts in processing passes due to the increased sampling rate. (Note: the above loosely applies to PCM, and loosely to DSD, but at least a few years ago, there were some major issues with the computational requirements for signal processing in the DSD domain. That and many DSP algorithms would essentially have to be mathematically reformulated for DSD. I'm out of touch with current practices with DSD.)
      2. Design benefits in the signal reproduction hardware that improve fidelity due to eliminating introduced artifacts in signal reconstruction. E.g. as regards CD audio vs. 96/24 audio, it's easier to design the DAC's brickwall filters for 96/24. With 44.1/16, the task is harder, and the filter is more likely to introduce distortion into the audible band. Sony had/has whole web pages and/or PDFs describing similar design principles driving the design of the DSD format.

      More info is available via Google and/or Google Groups on the rec.audio.* groups.

      Note: none of the above speaks to the critical questions of marketability: is it worth it to the end consumer? What does the consumer gain? What does the consumer lose?
  7. DVD-A *is* superior... by Tadrith · · Score: 3, Interesting

    I own several DVD Audio discs, and so far I am quite happy with all of them. The real benefit of DVD-A isn't the higher sampling rate... as many have derisively commented so far, as people we can't really notice the difference in sound quality, our ears are simply not up to it.

    The big benefit comes from being able to listen to music in something better than stereo. Regardless of quality, a good 5.1 surround mix is more pleasing to the ear because it lends new dimension to the music. If this format becomes widespread, I think we'll see more musicians taking advantage of the sourround sound effects to provide better experience. Many of the DVD-A discs I own also provide additional video content as well, and information about the artist that a lot of people might find interesting.

    You don't have to be a crazy audiophile to get this, either (although I am). Most places sell all-in-one kits that are more than high enough quality for the average person, and can be purchased for under 400$, or even 300$ in some cases. They generally come with a DVD player, and some sort of 5.1-capable receiver. That's all you need.

  8. Re:Buy it for your pet bat. Sorta by kenp2002 · · Score: 3, Interesting

    Actually humans can 'SENSE' fequencies beyond the 20-20 range. Dolby labs had an article in Hometheater magazine a few years back discussing the need for sub-and hyper sonic data to aid in dimensional perception. While it is unlikely that you can 'hear' a 30Khz sound you brain may still process it in some fashion. I think it was in 1999 around spring that they ran the article. Just because you can't hear it doesn't mean you should discard it. For instance if you encode low freqencies say around 10Hz you may not hear that but you can Feel it. You are absolutily correct that 100Khz is over kill, anyways where does 100Khz sit on the electromagentic list? You have to be getting close to infra-red! (Doh could you imagine being cooked by your music! ACK!!!)

    --
    -=[ Who Is John Galt? ]=-
  9. What if they made it cheaper? by 3583+Bytes+Free · · Score: 3, Interesting
    Considering that labels are under some amount of pressure for price-fixing/gouging, and they desperately want to cram some kind of content control mechanism into digital audio, it seems that they might be able to do that if they made the discs cheaper.

    That seems unlikely, but let's say they released DVD-As/SACDs for $12, and left CDs at $15-20. DVDs were deliberately priced low to make the format attractive, and that seems to have contributed to its success.

    Now, It seems unlikely to me that the labels would do such a thing. If they were that smart, they would already have their own pay-napster and be making $10/month off from millions of people. But if they did, they just might get to that "critical mass" needed to make one of those new formats the next CD.

  10. Re:well well well by John+Biggabooty · · Score: 3, Interesting

    People might be surprised at how good conventional stereo sounds if you put speakers to your left and right, where your ears are, instead of in front, where your eyes are. You get "three dimentionality" out of two speakers, like with headphones. Try it sometime.

    --
    That's Bigboo TAY! TAY!
  11. CD's are BIG by Triv · · Score: 3, Interesting

    CD's (and their cases) take up a LOT of room - I just packed up two double-stacked crates of CDs to get 'em out of the way (they're all ripped anyway and the iPod takes care of the portability). I'd love a cd that can be played on a standard CD player (well, a tray or spindle one anyway) that's half the size of a normal disc and holds the same amount of audio. I don't think there's anything wrong with the FORMAT, just the BULK of it. The last thing I need is more big shiny disks. I buy 'em, rip 'em and store 'em. Smaller is ideal. :)

    Triv

  12. Re:Audio Concept by Jobe_br · · Score: 5, Interesting

    Totally agree. The only decent 'hi-fi' thing I've seen of late which actually seems to be worthwhile, are superbit DVDs. These are essentially releases of popular "smash-hit" movies (like Terminator and the like) with all the "extra" DVD crap cut out. No director's commentary, no outtakes, none of that. Instead, the entire 9+GB of DVD space is consumed by the highest possible encoding of the video, after the audio track is laid down. If you're the type of person that can easily notice MPEG-2 compression artifacts, then you'll seriously appreciate the extra effort put into these "superbit" CDs. My bro is a hi-fi fanatic and audio/videophile. I got him one of these for Christmas and was impressed by the quality on his Sony Wega HDTV. Quite impressive. Definitely wasn't noticing any compression artifacts anymore!

    Cheers.

  13. Melancholy Elephants by yerricde · · Score: 5, Interesting

    I mean literraly there are only so many chords and note combinations possible. Unless something radical comes along I think that we will only have new instruments to rely upon.

    Heck not even new instruments. If you use the same melody as a previously published song, you're likely to face legal action. Four notes are enough to infringe, and there are fewer than 50,000 possible combinations.

    The theoretical limit on the number of distinct works is the subject of a short story called "Melancholy Elephants" by Spider Robinson. Read it and weep.

    --
    Will I retire or break 10K?
  14. Uninformed by Anonymous Coward · · Score: 3, Interesting

    I'm surprised how uninformed people are about this technology, given that is isn't exactly new.

    I can appreciate the improved resolution of DVDA and SACD. The argument about the 22khz limit is quite subtle and lots of people miss the point. If a digital filter operating at 22khz isn't designed perfectly (which isn't easy), it does artifact the music in the audible range. What the 96khz and 192khz resolutions bring is the ability for even the cheapest audio system with substandard filters to escape the artifacts because they are shifted way up beyond normal hearing range, instead of being smack bang in the middle of the program material.

    You won't be ripping SACD or DVDA anytime soon, or even playing them on PC's. Neither has a PC based player today to my knowledge. DVD-A uses Meridian Lossless Packing codec, and the only way to get an MLP codec on a PC today is to spend $$$ on DVD-A authoring software. I'm not even sure if that is encode/decode or encode only. I have also read that the DVD-A disk format is not compatible with the DVD-V format per se i.e. a DVD-ROM cannot read the DVD-A tracks.

    Anyone ripping a DVD-A today is simply ripping the DVD-V compatible Dolby 5.1 track included on some DVD-A's.

    The Sony SACD technology is based on DSD and operates at incredibly high frequencies. You couldn't design a system to be more unfriendly to digital audio (or pirates). At the recent AES show Sony were showing off OEM modules to people for encoding and decoding SACD. The reason is that off the shelf chips just don't work with their design. It's a major pain in recording studios as well, since nothing is designed to work with their standard, and only Sony can author SACD's today to my knowledge. About the only good thing SACD has (apart from the sound) is the backwards compatibility with dual layer discs in ordinary CD players.

    None of this gets around the fact that in the current economic environment (1) consumers are happy with MP3's and CD's and their existing systems (2) studio's aren't going to ditch their existing 24 bit 48 khz limited equipment, especially Pro Tools rigs and (3) much of the catalog of SACD and DVD-A is boring old music for stereophiles!

  15. Quality; deliberate degradation of CD track? by dpbsmith · · Score: 5, Interesting

    1) would love to read about a test where an IDENTICAL signal source was recorded in CD and SACD and compared, BLIND, by ordinary consumers. Is the difference really audible?

    2) More to the point, is there any way to STOP CD publishers from deliberately introducing degradation into the CD track in order to make the SACD sound better by comparison? Not that they would ever do such a thing, of course... but I'd like to see at least a truth-in-advertising disclosure if they did.

    1. Re:Quality; deliberate degradation of CD track? by uqbar · · Score: 4, Interesting

      They don't need to do this - in the rush to cash in on the CD jackpot, 100's of your favorite records were rushed through mastering with absolutely no care whatsever. The first generation of SACD mastering is being done with meticulous care. So for example, all those "digitally remastered" Rolling Stones reissues from the 90's have awful stuff like drop outs on them. Even without using the SACD layer of these releases, the new Stones records sound amazingly better.

      Anyhow here are a few points:
      1) the mixers and mastering engineers are still learning how to use multi channel formats. Just as early stereo records sound awkward,expect similar awkwardness in the early years of these formats.
      2) I don't think most of the folks here have heard these formats, so it's stupid for them to argue whether or not they sound better.
      3) With multichannel formats, spatial imaging is easier to attain than in stereo. The surprising result is that speaker and listener placement is actually less critical than it is in stereo. So unlike with stereo, you can move around the room and still have good imaging.

  16. Wait a minute... by Overzeetop · · Score: 3, Interesting

    I've already purchased a license for the music on my CDs (since, according to the RIAA, I don't really "own" anything). Shouldn't I get to trade them in for the new format for the cost of the raw media plus, say, 15% for overhead and profit?

    --
    Is it just my observation, or are there way too many stupid people in the world?
  17. Re:well well well by BobBonobobo · · Score: 5, Interesting

    I've heard the difference, and it's remarkable.

    My only friend who has a SACD player also has a $20K+ stereo (and I mean *stereo* -- no surround nonsense) with external amps, gold-tipped cables, etc... He played Brubeck's Take 5 on normal CD and on SACD for me. The change to the cymbals was unbelievable; it sounded like they were in the room.

    Granted, I don't know how much amp/speaker investment is required before you can hear the difference. But if the investment is low and the price of these fancy CD-replacements drops, I'd be interested. As for copy protection, anyone who thinks new formats will prevent copying is a fool.

    -Mr. Bonobobo

  18. Re:well well well by Jobe_br · · Score: 4, Interesting

    I know exactly what they all mean. I've had long discussions with my audiophile brother and I've read all the articles in Home Theatre magazine and god knows what else is out there. I'm no audiophile, but I'm as interested as the next guy in cool tech, so things like THX and DTS interest me. What makes me a 'non-audiophile' is the lack of any sort of desire to spend thousands of dollars on audio equipment.

    I know very well what the differences are between THX,DTS, even regular THX and THX EX (and DTS v. DTS ES). I can run down all the salient points between composite, component and s-video connections. I'm there, man. The thing is - the end effect should be a noticeable difference in what you experience. And that isn't really there. Maybe its there between DTS/THX and Dolby Digital. Given the right equipment, blah, blah, blah. But, in the environment that many people setup their home theater systems, the differences are lost quite easily.

    Know how to avoid standing waves in your home theater setup? How 'bout measuring the distance between furniture objects, walls and speakers to provide the appropriate distance for sound waves to expand appropriately? Know how to tell if the audio you're listening to has a compressed signal? Not digitally compressed to save space - compressed to change the way the sound waves come out of the speakers. These are the things that ya need to know about. If every audiophile were an audio engineer, these are the things they *would* know about. But, its far easier to spend the money on high-end audio equipment than it is to get into a decent audio engineering school, isn't it?

    Cheers.

  19. Re:How many of you use Celerons? by Chris+Johnson · · Score: 3, Interesting
    Hey now, I personally underwent a double-blind, ABX test to tell a difference between a recording dithered to 16 bit and truncated to 16 bit. Under normal conditions, not an ideal choice of recording, and with cars and stuff going by outside.

    I peaked out at about 8 out of 10 correct IDs, a 94% confidence. After that, my ear burned out and the confidence dropped with a series of bad guesses- I was ignoring good advice to not attempt to do a full course of 16 trials in one sitting, much less while fatigued and incapable of continuing to hear at that level. I got mad after that and blew off ANOTHER set of 16 trials real fast, and got 77% confidence I was hearing that one, even after burn-out. This is still with traffic outside and all.

    I'm sorry- this stuff is not easy to consciously hear, but it has its subliminal effect and it IS real. Sometime I'm gonna take a recording of an acoustic space like my room, listen at a good volume at 3 in the morning rather than (cringe) 5 in the afternoon when I did those tests, and ace the annoying little buggers. For now, however- odds are, you're wrong.