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Inside the iPod, Past and Present
We mentioned the iPod Shuffle dissection a couple of days ago. Reader UtahSaint writes "Electronic Design have got a neat little article giving non-Apple employees
an insight into the makings of the original iPod and the revisions made (on a technical level) with the 2nd and 3rd generation iPods. The third-generation iPod contains two power-management chips from Royal Philips Electronics, a TEA1211 and a PCF50605. The TEA1211 is a dc-dc converter that can switch automatically between step-down and step-up operation in response to changing input voltage. The PCF50605, a single-chip power-management unit (PMU), can adjust power-supply voltages to the lowest thresholds needed for functions in a particular power domain." And finally, sammykrupa writes "PC Mag has a great review of Apple's iPod Shuffle. It covers the quality of the audio output saying that it is has dead-flat frequency response, less harmonic distortion, and most notably, better bass response than its bigger siblings. The older iPods, especially the Mini, have been rightfully criticized for being somewhat deficient in bass, and although the bigger players have flat frequency response, they have trouble sustaining big bass notes."
The older iPods, especially the Mini, have been rightfully criticized for being somewhat deficient in bass, and although the bigger players have flat frequency response, they have trouble sustaining big bass notes.
The iPod is designed to take with you and hear music on the bus, or while jogging - with headphones. Does it really matter how good the bass is if you listen to it with headphones anyway? I think not.
I just don't trust anything that bleeds for five days and doesn't die.
The linked article is interesting from a technical standpoint, but it's also pretty dry--after the lead paragraph, the author doesn't really talk about the sweat and tears behind the scenes. Fortunately, the Times Magazine ran a story (reg-free link) a couple years ago about the human side of iPod, from conception to birth. Turns out the iPod didn't spring whole from the tip of Steve Jobs' magical wang. The article's worth a read if you're into this kind of thing.
Troll? It's hilarious, it's a paraphrase of our illustrious Taco's first comment on the iPod...
The point is that the old Ipod headphone preamps didnt't have enough juice to power most headphones properly. What is the hardest frequency to reproduce? The bass. So, even with headphones and the eq turned up, the bass didn't sound as full and punchy as it should have. This was probably the worst flaw sound quality wise. The AAC or MP3 encoding at 128K are virtually indistinguishable from CDs for most listeners, but most listeners can hear the lack of bass. Its like something is missing.
I had a 3rd gen, now I have a 4th gen. Both drove my Grado SR-60 headphones (think Radar from Mash) just fine. In fact- they do a noticeably better job driving them at low frequency than my Powerbook.
Any problems with low frequency response probably have something to do with the fact that, despite the Steve Reality Distortion Field, you cannot get good low-frequency response in a tiny little earplug. You can put marketspeak on your website till the cows come home about Neodymium magnets make 'em better- they're still just tiny earplug speakers.
Please help metamoderate.
Not directly involving the iPod, but this week's I Cringely has a discussion of how the new Mac Mini may be a move by Apple to get into the movie distribution business, trying to repeat with video the success they've had with the iPod for audio. He has some interesting speculation on synergy from Pixar (which Jobs also controls) and Sony ("...you don't get the head of Sony at your event just to sell camcorders"). Well worth a read.
"Prepare for the worst - hope for the best."
With all of the iPod Shuffle discussion and disections, I am surprised to see that no one has commented on the extra lines in the USB connector.
If you look in the connector, there are five small lines between the main USB lines. (BTW, these are not included in the Shuffle's dock.) There is also NO USB logo's in any of the packaging or documentation.
It looks like Apple may have some secret features up their sleeves.
"Loud enough to cause hearing damange" is a *feature*.
ZOMG I WOULD LOVE TO KNOW ABOUT YOUR FEELINGS ON MACINTOSH VERSUS WINDOWS, VI VERSUS EMACS, AND HOW YOU'RE NOT A DORK
"La perfection est atteinte non quand il ne reste rien à ajouter, mais quand il ne reste rien à enlever." (Perfection is achieved, not when you have nothing more to add, but when you have nothing more to take away).
-- Antoine St. Exupery (1900-1994)
You forgot one crucial piece in the first part of that: the amplifier stages.
The crappiest set of speakers and headphones will sound much better through a decent preamp and amplifier than the most expensive speakers and headphones will sound through a $19.99, underpowered clearance special.
If, in fact, all media players have identical, real-world response, then you'd be correct. This is seldom the case, though. A lot of manufacturers skimp on the preamp and amplifier stages in audio equipment to save a few bucks because, after all, digital is digital.
There's so little difference between politics and jihad lately...
I'm a mastering engineer and hang out on mastering web boards, and the iPod came up in conversation.
FWIW, a tech heavyweight (trying to remember if it was Bruno Putzeys?) said they'd measured the iPod and got a perfect 10K tone out of the bugger with virtually unmeasurable sidebands.
NOT easy. That outperforms a heck of a lot of high-quality CD players, never mind mp3 portables. iPods apparently have very good tech if you know how to measure them. Jitter is what that 10K tone test measures, and it performed very, very well, I'm told.