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Saturday, December 15, 2007


Appeared on Rolling Stone issue 1042/1043 (Dec. 27, 2007 - Jan. 10, 2008), the following is an article I agree with completely. I already wrote about this nine years ago, and I will repost the article I wrote pretty soon -hopefully I'll have time to translate it in english!




The Death of High Fidelity
In the age of MP3s, sound quality is worse than ever
By Robert Levine

David Bendeth, a producer who works with rock bands like Hawthorne Heights and Paramore, knows that the albums he makes are often played through tiny computer speakers by fans who are busy surfing the Internet. So he's not surprised when record labels ask the mastering engineers who work on his CDs to crank up the sound levels so high that even the soft parts sound loud. [1]

Over the past decade and a half, a revolution in recording technology has changed the way albums are produced, mixed and mastered -almost always for the worse. "They make it loud to get [listeners'] attention," Bendeth says. Engineers do that by applying dynamic range compression, which reduces the difference between the loudest and softest sounds in a song. Like many of his peers, Bendeth believes that relying too much on this effect can obscure sonic detail, rob music of its emotional power and leave listeners with what engineers call ear fatigue.
"I think most everything is mastered a little too loud," Bendeth says. "The industry decided that it's a volume contest." Producers and engineers call this "the loudness war," and it has changed the way almost every new pop and rock album sounds. But volume isn't the only issue. Computer programs like Pro Tools, which let audio engineers manipulate sound the way a word processor edits text, make musicians sound unnaturally perfect. And today's listeners consume an increasing amount of music on MP3, which eliminates much of the data from the original CD file and can leave music sounding tinny or hollow. "With all the technical innovation, music sounds worse," says Steely Dan's Donald Fagen, who has made what are considered some of the best-sounding records of all time. "God is in the details. But there are no details anymore."


The idea that engineers make albums louder might seem strange: Isn't volume controlled by that knob on the stereo? Yes, but every setting on that dial delivers a range of loudness, from a hushed vocal to a kick drum - and pushing sounds toward the top of that range makes music seem louder. It's the same technique used to make television commercials stand out from shows. And it does grab listeners' attention - but at a price. Last year, Bob Dylan told ROLLING STONE that modern albums "have sound all over them. There's no definition of nothing, no vocal, no nothing, just like - static." In 2004, Jeff Buckley's mom, Mary Guibert, listened to the original 3/4" tape of her son's recordings as she was preparing the tenth-anniversary reissue of Grace. "We were hearing instruments you've never heard on that album, like finger cymbals and the sound of viola strings being plucked," she remembers. "It blew me away because it was exactly what he heard in the studio."

To Guibert's disappointment, the remastered 2004 version failed to capture these details. So last year, when Guibert assembled the best-of collection So Real: Songs From Jeff Buckley, she insisted on an independent A&R consultant to oversee the reissue process and a mastering engineer who would reproduce the sound Buckley made in the studio. "You can hear the distinct instruments and the sound of the room," she says of the new release. "Compression smudges things together." Too much compression can be heard as musical clutter; on the Arctic Monkeys' debut, the band never seems to pause to catch its breath. By maintaining constant intensity, the album flattens out the emotional peaks that usually stand out in a song. "You lose the power of the chorus, because it's not louder than the verses," Bendeth says. "You lose emotion." The inner ear automatically compresses blasts of high volume to protect itself, so we associate compression with loudness, says Daniel Levitin, a professor of music and neuroscience at McGill University and author of 'This Is Your Brain on Music: 'The Science of a Human Obsession. Human brains have evolved to pay particular attention to loud nQises, so compressed sounds initially seem more exciting. But the effect doesn't last. "The excitement in music comes from variation in rhythm, timbre, pitch and loudness," Levitin says. "If you hold one of those constant, it can seem monotonous." After a few minutes, research shows, constant loudness grows fatiguing to the brain. Though few listeners realize this consciously, many feel an urge to skip to another song. "If you limit range, it's just an assault on the body," says Tom Coyne, a mastering engineer who has worked with Mary J. Blige and Nas. "When you're fifteen, it's the greatest thing - you're being hammered. But do you want that on a whole album?"
To an average listener, a wide dynamic range creates a sense of spaciousness and makes it easier to pick out individual instruments - as you can hear on recent albums such as Dylan's Modern Times and Norah Jones' Not Too Late. "When people have the courage and the vision to do a record that way, it sets them apart," says Joe Boyd, who produced albums by Richard Thompson and R.E.M.'s Fables of the Reconstruction. "It sounds warm, it sounds three-dimensional, it sounds different. Analog sound to me is more emotionally affecting."

Rock and Pop producers have always used compression to balance the sounds of different instruments and to make music sound more exciting, and radio stations apply compression for technical reasons. In the days of vinyl records, there was a physical limit to how high the bass levels could go before the needle skipped a groove. CDs can handle higher levels of loudness, although they, too, have a limit that engineers call "digital zero dB," above which sounds begin to distort. Pop albums rarely got close to the zero-dB mark until the mid- 1990's, when digital compressors and limiters, which cut off the peaks of sound waves, made it easier to manipulate loudness levels. Intensely compressed albums like Oasis' 1995 (What's the Story) Morning Glory?[2] set a new bar for loudness; the songs were well-suited for bars, cars and other noisy environments. "In the Seventies and Eighties, you were expected to pay attention," says Matt Serletic, the former chief executive of Virgin Records USA, who also produced albums by Matchbox Twenty and Collective Soul. "Modern music should be able to get your attention." Adds Rob Cavallo, who produced Green Day's American Idiot and My Chemical Romance's The Black Parade, "It's a style that started post-grunge, to get that intensity. The idea was to slam someone's face against the wall. You can set your CD to stun." It's not just new music that's too loud. Many remastered recordings suffer the same problem as engineers apply compression to bring them into line with modern tastes. The new Led Zeppelin collection, Mothership, is louder than the band's original albums, and Bendeth, who mixed Elvis Presley's 30 #1 Hits, says that the album was mastered too loud for his taste. "A lot of audiophiles hate that record," he says, "but people can play it in the car and it's competitive with the new Foo Fighters record."
Just as CDs supplanted vinyl and cassettes, MP3 and other digital music formats are quickly replacing CDs as the most popular way to listen to music. That means more convenience but worse sound. To create an MP3, a computer samples the music on a CD and compresses it into a smaller file by excluding the musical information that the human ear is less likely to notice.[3]

Much of the information left out is at the very high and low ends, which is why some MP3s sound flat. Cavallo says that MP3s don't reproduce reverb well, and the lack of high-end detail makes them sound brittle. Without enough low end, he says, "you don't get the punch anymore. It decreases the punch of the kick drum and how the speaker gets pushed when the guitarist plays a power chord." But not all digital music files are created equal. Levitin says that most people find MP3s ripped at a rate above 224 kbps virtually indistinguishable from CDs. (iTunes sells music as either 128 or 256 kbps AAC files -AAC is slightly superior to MP3 at an equivalent bit rate. Amazon sells MP3s at 256 kbps.) Still, "it's like going to the Louvre and instead of the Mona Lisa there's a 10 megapixel image of it," he says. "I always want to listen to music the way the artists wanted me to hear it. I wouldn't look at a Kandinsky painting with sunglasses on." Producers also now alter the way they mix albums to compensate for the limitations of MP3 sound. "You have to be aware of how people will hear music, and pretty much everyone is listening to MP3," says producer Butch Vig, a member of Garbage and the producer of Nirvana's Nevermind. "Some of the effects get lost. So you sometimes have to over-exaggerate things."
Other producers believe that intensely compressed CDs make for better MP3s, since the loudness of the music will compensate for the flatness of the digital format. As technological shifts have changed the way sounds are recorded, they have encouraged an artificial perfection in music itself. Analog tape has been replaced in most studios by Pro Tools, making edits that once required splicing tape together easily done with the click of a mouse. Programs like Auto-Tune can make weak singers sound pitch-perfect, and Beat Detective does the same thing for wobbly drummers. "You can make anyone sound professional," says Mitchell Froom, a producer who's worked with Elvis Costello and Los Lobos, among others. "But the problem is that you have something that's professional, but it's not distinctive. I was talking to a session drummer, and I said, 'When's the last time you could tell who the drummer is?' You can tell Keith Moon or John Bonham, but now they all sound the same."

So is music doomed to keep sounding worse? Awareness of the problem is growing. The South by Southwest music festival recently featured a panel titled "Why Does Today's Music Sound Like Shit?" In August, a group of producers and engineers founded an organization called Turn Me Up!, which proposes to put stickers on CDs that meet high sonic standards. But even most CD listeners have lost interest in high-end stereos as surround-sound home theater systems have become more popular, and superior-quality disc formats like DVD-Audio and SACD flopped. Bendeth and other producers worry that young listeners have grown so used to dynamically compressed music and the thin sound of MP3s that the battle has already been lost. "CDs sound better, but no one's buying them," he says. "The age of the audiophile is over." [4]



Get the Most of your iPod.

1. Increase the bit rate: Higher bit rates = better sound. Set your iTunes to rip at 192 kbps, or better - we recommend jacking it all the way to 320.
2. Ditch the white earbuds: For an upgrade. try higher-end earphones from Shure. Ultimate Ears or Etymotic. Bonus; fewer muggings!
3. Don't re-rip!!! Morality aside, it's a bad idea to re-rip a CD burned from MP3s - the sound will be noticeably worse.
4. Upgrade from MP3: Use iTunes' AAC format or windows Media Audio .



ALTER RETAKES
The MP3 Challenge
By Joe Levy

I HAVE NOTHING AGAINST MP3s – FOR ONE THING, IT would be like arguing with the wind, and the convenience of sorting through the 11,345 songs on my iTunes is unbeatable. All I have to do is think of something to hear it. But there's also no denying the compromise in fidelity caused by all that convenient compression.

Wondering just what gets lost in the format change, I spent a week listening to music on vinyl, CD and iTunes (AAC files at a low bit rate, 128- "kinda shitty," says the office iPod jockey).

I used a pair of Thiel CSI.6 tower speakers - great bass - but the results were similar with the bookshelf speakers I use every day. I started with one of my favorite records of the year, LCD Soundsystem's Sound of Silver.

It was the first time I'd played the vinyl, and at first I thought there wasn't much difference.

But then on "AllMy Friends" I noticed the drums - actual drums, not electronic - with a clarity that had never been there before.

The CD sounded good, though I was convinced the bass was warmer on the vinyl.

Neither I nor anyone else who listened could tell the difference between the CD and theAAC files. A rarely played vinyl copy of Pavement's Croo~ed Rain, Croo~ed Rain was a revelation.

It had never sounded so alive.

The presence vinyl fetishists always talk about was there - this was music made by people in a room, not on a computer.

Maybe it was because I know the album forward and backward, but the AAC files sounded terrible, with the compression pushing on the bottom end until it was like mud and squashing the top notes into something tinny and annoying.

Both the CD and the AAC files were like listening to a picture of this music, though unless you'd heard the real thing you might never notice. The biggest difference, surely a result of remastering, was with John Lennon's Imagine.

On vinyl, the title track was as I remembered it, with the focus on Lennon himself and lots of room for the instrumentation.

But the CD put me right inside the piano he was playing - great clarity, yet not what he and Phil Spector had intended.

Over to theAAC files, where the strings sounded like a synthesizer trying to replicate strings.

Was the song ruined, or even diminished? Not exactly, but I was uncomfortable with the changes both digital formats wrought.

This is the way this music will survive: like a color plate in an art book, with the original sound kept as a museum piece by those who still have turntables. Discouraged, I went back to LCD Soundsystem, letting iTunes play me through an album that embraced digital.

Maybe it's the power of suggestion, but I found myself wondering if the AAC files weren't inspiring the ear fatigue you can read about in Rob Levine's story.

On vinyl, I had to keep jumping up to flip album sides, but I was excited to do it.

Now I was just jumpy and eager for the sound to change.

So I pushed "shuffle." And suddenly everything was fine.




Footnotes:
[1] I told you, it wasn't just me. Recording Engineering these days suck.
[2] Funny thing, I remember making a copy of this CD on a cassette so I could listen to it in my car, and the result was disastrous: distortion, loudness... even tho I used the same old level I used for all my cassettes!
[3] My other blog, CacaoTechBlog, has an interesting comment (in spanish :) ) about MP3's compression techniques.
[4] Not over, my friend. Vinyl's still around.
Comments are welcome!

1 comments:

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saludoss
marchela de sant.