Slashdot Mirror


Mastering Engineer Explains Types of Compression, Effects On Today's Music

Stowie101 writes "Today is Dynamic Range Day, which is an event to educate the public about the 'Loudness Wars' that are compressing and harming the quality of today's music. Ian Shepherd, a mastering engineer and founder of Dynamic Range Day, explains why music lovers should avoid MP3 files. 'The one that springs to mind is to avoid MP3, especially if it's 128 kbps. Apple uses a more advanced technology called AAC, but if someone can get lossless files like FLAC that's a better place to start.' Shepherd says it's actually harder to make a good 'lossy' encode of something that has been heavily musically compressed. Very heavy dynamic compression and limiting makes MP3s sound worse, so the loudness wars indirectly make MP3s sound worse."

27 of 382 comments (clear)

  1. obligatory... by Anonymous Coward · · Score: 5, Funny

    Hearing the difference now isn't the reason to encode to FLAC. FLAC uses lossless compression, while MP3 is 'lossy'. What this means is that for each year the MP3 sits on your hard drive, it will lose roughly 12kbps, assuming you have SATA - it's about 15kbps on IDE, but only 7kbps on SCSI, due to rotational velocidensity. You don't want to know how much worse it is on CD-ROM or other optical media.

    I started collecting MP3s in about 2001, and if I try to play any of the tracks I downloaded back then, even the stuff I grabbed at 320kbps, they just sound like crap. The bass is terrible, the midrange...well don't get me started. Some of those albums have degraded down to 32 or even 16kbps. FLAC rips from the same period still sound great, even if they weren't stored correctly, in a cool, dry place. Seriously, stick to FLAC, you may not be able to hear the difference now, but in a year or two, you'll be glad you did.

    1. Re:obligatory... by Anonymous Coward · · Score: 5, Funny

      Did you even look for a job today?

    2. Re:obligatory... by Anonymous Coward · · Score: 3, Funny

      Too much technobabble. Can you give me a car analogy instead?

    3. Re:obligatory... by binarylarry · · Score: 5, Funny

      No, it's true. Velocidensity is a very important consideration to an audiophile.

      You can sometimes improve velocidensity by using very expensive, high quality wooden knobs on all the stereo equipment. The superior quality wood's acoustogravity spreads out the reverberations and diminishes the effects of compression and SNR gain.

      --
      Mod me down, my New Earth Global Warmingist friends!
    4. Re:obligatory... by Anonymous Coward · · Score: 3, Funny

      "for each year the MP3 sits on your hard drive, it will lose roughly 12kbps"
      ok so 12 kbps / 8 * 60 * 60 * 24 * 365.25 = 47.3 GB of audio stream loss per year. niceee

    5. Re:obligatory... by zimage · · Score: 5, Funny

      What on earth did I just read?

      Digital data does not degrade Mr. Audiophile. If it was 256k when you got the MP3 it will still be 256k. Though the CD-R might self-erase (the dye fades) and become completely unplayable. I recommend only store-bought CDs (they are pressed with permanent pits). Or just save money and stream your music off youtube for free. ;-)

      Mod parent "Doesn't understand humor".

    6. Re:obligatory... by CharlyFoxtrot · · Score: 5, Funny

      Tip: put a magnet on top of your hard drive. If bits do fall off they'll stick to the magnet so you can recycle them. These are also known as "sticky bits."

      --
      If all else fails, immortality can always be assured by spectacular error.
    7. Re:obligatory... by Anaerin · · Score: 5, Funny

      Don't fall into the trap of switching to SSDs to try and escape the velocidensity issues, either. What with electron drift, bit rot, transistor breakdown and silicon-isolator tunneling issues, you can get up to 12kbps loss, depending on NAND structure and refresh frequency of your SSD. And heaven forbid you place your SSD in anything but an isolated Faraday cage - solar ejection events can cause havoc with silicon-based storage systems!

    8. Re:obligatory... by ColdWetDog · · Score: 4, Funny

      Oh give CPU6502 a break. He's only an 8 bit. His algorithms run pretty slow.

      --
      Faster! Faster! Faster would be better!
    9. Re:obligatory... by Beelzebud · · Score: 1, Funny

      This is a... Is this a week day?

    10. Re:obligatory... by interkin3tic · · Score: 4, Funny

      Well I do use monster cables, so I don't think I need to worry about that.

    11. Re:obligatory... by Anonymous Coward · · Score: 0, Funny

      Do not let that aggression stand, man.

    12. Re:obligatory... by Anonymous Coward · · Score: 5, Funny

      What? No thermal enclosure? Just 2 degrees celcius variation can manifest noticeable stochastic interference, not to mention the loss of the warmth from the tube amplifier.

    13. Re:obligatory... by dreamchaser · · Score: 4, Funny

      Why are you all ignoring the very real problem of entropic noise dilution caused by cosmic radiation and the natural tendency of any ordered system to move towards a state of increasing entropy? That is the real problem. Think of the children! They will not be able to hear the varied subtleties of such great hits as "Love Shack" and "Mickey" in all of their original splendor if this keeps up. Think of the children.

    14. Re:obligatory... by Kreigaffe · · Score: 4, Funny

      Mod parent correct but incomplete! SSD drives can actually be improved down to less than 6kbps loss a year if you're willing to drop top dollar. It's a bit cutting edge, so I'll spare the gory details.. but you can gravimetrically contain stray electron decay by routing the phononic wavefront through an electroencabulator. It's a bit tricky to get set correctly, though -- you can't adjust it while in use or you risk collapsing the function and all quantum effects begin to fail. I learned THAT lesson the hard way!

      --
      ... still waiting for this free-as-in-beer free beer I keep hearing about. :|
    15. Re:obligatory... by drinkypoo · · Score: 3, Funny

      This is why it's so important to upgrade to audiophile-grade digital audio and network cables. You really can't afford any more bit degradation on top of the time-related rot.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    16. Re:obligatory... by Ihmhi · · Score: 4, Funny

      Static white noise sounds actually better in 128k.

      Yeah, I downgraded the encoding on my dad's Shania Twain MP3s first chance I got.

    17. Re:obligatory... by Opportunist · · Score: 4, Funny

      And while we're at it, ya know, Navy pilots are in fact internet addicts.

      They break out in cold sweat when their screen says NO CARRIER.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    18. Re:obligatory... by prash_n_rao · · Score: 4, Funny

      Power outlets?? God! You are a newbie! Do you really like those 50/60 Hz hums and their harmonics? Batteries or capacitors, man! That's the way to get clean power.

      --
      This is not my sig.
    19. Re:obligatory... by elgol · · Score: 4, Funny

      The sloshing of ions in batteries reflect themselves as a disturbing muddying of the high registers. Capacitors may help, but only if they have graphene concentric plates with vacuum dielectric. The plates must be closer than the Casimir distance to prevent virtual particle pair formation from adding a faint, but clearly perceptible haze.

  2. Re:Trusted Source by binarylarry · · Score: 5, Funny

    Right, because this issue JUST STARTED RECENTLY.

    Damn those kids and this BRAND NEW PHENOMENON.

    You tell em Neil!

    --
    Mod me down, my New Earth Global Warmingist friends!
  3. When Experts Attack by Anonymous Coward · · Score: 3, Funny

    I am greatly enjoying 'Adopt an Audiophile... And Beat Some Sense Into Him' Month here on Slashdot.

  4. Re:Musicians demand loudness by Hentes · · Score: 3, Funny

    Just tell them it goes up to 11.

  5. Finally! Someone who knows something about music! by Geak · · Score: 3, Funny

    The loudness wars have been a complaint of mine for some time now. The example video at the end of the article gives an EXCELLENT explanation. I only wish that more people would complain about this so that the quality of recordings would get better. Unfortunately most of the music of today sounds more like a Stephen Hawking lecture with distorted beeping and buzzing in the background and no actual music. When I was in school - music was part of the curriculum. I don't know if it still is but the kids of today are completely CLUELESS when it comes to music. They only seem to like songs about 'guns, money, drugs, niggas and bitches' because they SEE not HEAR these videos on MTV. They see some gun toting loser driving a ferrari, throwing stacks of cash around, surrounded by half naked crack whores and think - "Man that is the life I want to lead!" Their music tastes follow accordingly. If they actually listened to the lyrics - they might actually be disgusted.

  6. Re:huh by Ihmhi · · Score: 4, Funny

    I've been playing bass for 30+ years now, guess where they always stick the bass player? Right next to the crash.

    First, wear hearing protection. Too few artists actually do this and it hurts them in the long run.

    Secondly, why are you standing near the crash? I mean, you're in the band. Can't you stand wherever you wa-

    bass player

    Oh... nevermind.

  7. Re:Trusted Source by StikyPad · · Score: 3, Funny

    What's the old saying, Garbage In, Garbage Out?

    Damn, I thought that was a new saying after reading it in a Wired article recently.

  8. Re:huh by oergiR · · Score: 4, Funny

    it makes me literally trip over my own fingers.

    Some hate it when people use "literally" when they mean "figuratively".

    Not me. I picture you literally tripping over your fingers. Which body parts were you playing your bass with before that happened?