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Inside the iPod, Past and Present

Posted by michael on from the outside-of-warranty dept.

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."

3 of 409 comments (clear)

  1. Makings of the original iPod? by Gob+Blesh+It · · Score: 5, Interesting

    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.

  2. Sound Quality by exquisito · · Score: 5, Interesting

    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.

  3. Hidden iPod Shuffle features? by Anonymous Coward · · Score: 5, Interesting

    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.