Very curious iPod bug

Discussion in 'Hi-Fi and General Audio' started by michaelab, May 26, 2004.

  1. michaelab

    michaelab desafinado

    Joined:
    Jun 19, 2003
    Messages:
    6,403
    Likes Received:
    1
    Location:
    Lisbon, Portugal
    I've been using my iPod for a little while now and have had absolutely no problem with it. I think the sound quality (320kpbs MP3, normal stereo, ripped using iTunes and using Sony EX71 earbuds) is superb and astonishingly good value for the price. However, I've just come across the oddest of problems:

    Having just received CDs of Brucker's 4th, 5th, 7th and 8th symphonies for my birthday (yes, I really don't know any Bruckner :shame: ) I was really looking forward to giving them all a good listen and as is so often the case that usually means at work on my iPod rather than at home on the main system :rolleyes: . So, I ripped them all with iTunes and transferred them to the iPod as I normally do along with the latest album from "The Streets" (The Streets and Bruckner....odd combination :D ).

    I listened to the Streets album first (which I love btw) and sonically it was fine, just as good as all my other rips. Then onto the Bruckner symphonies, starting with no. 4. It opens with opens with a really haunting solo horn over tremolo strings - as beautiful opening as any that exists - but there's something wrong. The horn sounds all warbly as if it's being played underwater ??? I carry on for a while and the same warbly / gargly / underwater effect is happening to all wind and brass instruments, particularly when playing quietly. Strings seem to be oddly unaffected :confused: . Also, loud passages seem to be fine. OK, so maybe that was somehow a bad rip. I try all the other Bruckner symphonies and they're all affected by the same problem :eek: .

    So, back to iTunes to check the file(s). Confirm that I did rip it at 320kbps and everything looks OK. I play the file through iTunes and it seems fine. The horns are sounding just as they should. So, I delete the symphony off my iPod and transfer it again. No joy. Still sounds buggered on the iPod. I have absolutely no idea what's going on :confused: ?

    Other classical music I've got on the iPod (eg. Rachmaninov Piano Concertos) is fine, so far it's only been these symphonies. It seems like a very strange MP3 decoding bug that somehow only affects those particular tracks which is most odd.

    Anyone heard of any similar issues? I'm running the latest version of the iPod firmware and used the latest version of iTunes (4.5) to rip the tracks. The only thing I can still try when I get back home to Lisbon is try ripping the files again on my home PC instead of the work laptop but since the file is fine on the laptop I don't see that making a big difference. Otherwise I'll have to try maybe AAC or Apple lossless for those symphonies.

    Michael.
     
    michaelab, May 26, 2004
    #1
  2. michaelab

    PBirkett VTEC Addict

    Joined:
    Jun 20, 2003
    Messages:
    2,456
    Likes Received:
    1
    Location:
    The Toon
    Definitely sounds like an MP3 artifact, maybe caused by the encoder used on the ipod. Sorry I cant really be any more help than that.
     
    PBirkett, May 27, 2004
    #2
  3. michaelab

    Slaphead Lurking less

    Joined:
    Jun 23, 2003
    Messages:
    137
    Likes Received:
    0
    Location:
    Zürich, Switzerland
    Try using the AAC encoder instead. The iPod will then use a different algorithm to decode the audio

    HTH
     
    Slaphead, May 27, 2004
    #3
  4. michaelab

    michaelab desafinado

    Joined:
    Jun 19, 2003
    Messages:
    6,403
    Likes Received:
    1
    Location:
    Lisbon, Portugal
    I re-ripped them all using the new Apple lossless encoder to give it a try. Sounds perfect :) . File sizes are not too outrageous either - looks like it's managing slightly better than 2:1 compression.

    When my login at ipodlounge.com is sorted :mad: I'll post over there aswell - I'd be interested if anyone else has encountered the weird MP3 artefact.

    Michael.
     
    michaelab, May 27, 2004
    #4
  5. michaelab

    timbo

    Joined:
    Jun 20, 2003
    Messages:
    40
    Likes Received:
    0
    Location:
    Lost again
    Had something quite similar with a whole load of CD's, I cured it by setting the EQ for the affected CD's to Flat in itunes.

    May be the same thing as it only seemed to afffect the 'busier' recordings.

    timbo
     
    timbo, May 27, 2004
    #5
  6. michaelab

    michaelab desafinado

    Joined:
    Jun 19, 2003
    Messages:
    6,403
    Likes Received:
    1
    Location:
    Lisbon, Portugal
    I always use flat EQ anyway. When I get back home I'll try a couple more things to try and narrow down the problem but it is a weird one.

    Michael.
     
    michaelab, May 27, 2004
    #6
  7. michaelab

    michaelab desafinado

    Joined:
    Jun 19, 2003
    Messages:
    6,403
    Likes Received:
    1
    Location:
    Lisbon, Portugal
    michaelab, May 30, 2004
    #7
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.