Listening Test

These three files are of the same 57-second piece of music. One was ripped to FLAC, one was ripped to a 75%-quality WMA and one was ripped to a 10%-quality WMA:

When you look at the original file sizes involved, the FLAC is 3MB, the 75% WMA is 510KB and the 10% WMA is just 200KB.

However, I’ve now converted all three files back to [uncompressed] WAV, so that -give or take a dozen bytes or so- all file sizes are pretty much identical (9MB or thereabouts). You won’t be able to tell which is which just by comparing file size, in other words, but each has been encoded at wildly different quality levels.

So the question is, can you tell which file is which, just by listening (checking the wave form in something like Audacity is not allowed!)?

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14 thoughts on “Listening Test

  1. Peter Lyons-Lewis

    After listening to the three files in the not quite so quiet enough kitchen, I’d agree with the first respondent:

    File 1: 75% WMA
    File 2: 10% WMA
    File 3: FLAC

    There is much more detail in the third snippet.

    Reply
  2. dizwell Post author

    No, no: no tricks. They really are as described. I’m curious who can hear what differences, that’s all. (I think if you felt able to add “an indication” of your age, that would be useful, too: I am expecting 15 year-olds to be able to tell the difference much more easily than 45 year-olds!)

    Reply
  3. Norman Dunbar

    Speaking as a slightly deaf – caused by 17 years of helmet “white” noise while riding a motorbike – and also as a 52 year old, I can honestly say that I can hear very little difference between all three. I think the third one sounds a little clearer.

    Played on my Dell laptop, in Amarok, through a set of Sony noise cancelling in-ear headphones with noise cancelling one and off as well as on a pair of X-mini laptop speakers.

    Nice song though.

    Cheers,
    Norm.

    Reply
  4. dizwell Post author

    Hi Colin: The piece of music is by Ottorino Respighi (who’s about as Armenian as I am, sorry to say!), from a ballet called “La Pentola Magica”

    I found http://www.classicalarchives.com/work/259059.html which has more of it for sampling, but it’s the not same recording I have (details of which I couldn’t tell you off the top of my head). Track 2, I think.

    I like the ‘Entry of the Tsar’ track, too.

    Reply
      1. dizwell Post author

        Found it here on Amazon. Basically, the Chandos recording, but I can’t tell who the singer is. The singer is Hannah Sawle, who I must confess to never having heard of, but her details are mentioned here

        Reply
  5. Rich

    I hate to admit it, but I couldn’t tell the difference at all. File3 sounded slightly better when I focused on the nuances, but I may have just been making that up in my head.

    Reply
  6. dizwell Post author

    I’ll let this run for another few days, and announce the results of the International Jury (Royaume-Uni, null pointe!) then. The results so far have been very interesting!

    Reply

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