Tip: Joining MP3 files seamlessly

Discussion in 'Software' started by cpemma, 4 Dec 2007.

  1. cpemma

    cpemma Ecky thump

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    Might help somebody...

    I've a CD I've been after the MP3 of but some of the tracks merge into each other on the original (but rip to separate files). Tried a load of MP3 joiners, they all gave a blip at the joint.

    Free solution:
    1. Rip to wav (CDex)

    2. Join the required wav files in Foobar2000 (Select, Rt.Click, Convert to Single File)

    3. Encode to MP3 (drag into CDex window)
    Seamless :thumb:
     
  2. lworbey

    lworbey What's a Dremel?

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    Yeah I use a program called Goldwave that is great although I don't remember if its free or not :eyebrow:
     
  3. badders

    badders Neuken in de Keuken

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    If you do it with goldwave, ensure that the waveforms of both mp3/wavs are at zero at the joining point.
    The 'Blip' is caused by the audio waveform suddenly jumping from "all the way up to 11" to zero, or vice versa (i.e. without the ususal sine transition)
     
  4. Zurechial

    Zurechial Elitist

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    Yep, exactly. :thumb:

    A good way of eliminating those 'digital clicks' is to open the audio file in question in any audio editor (such as the free Audacity), then select a tiny portion at the beginning of the file and apply a "Fade in" effect, then select a tiny portion at the end of the file and apply a "fade out" effect.

    The fade will force the file to start at -∞dB and fade into the audio at the start, whilst fading out to -∞dB at the end of the file.
    Selecting miniscule portions of audio at the beginning and end of the track means that the fade will be imperceptible to the ear, but it'll eliminate those clicks and pops between tracks.

    Cpemma's method is probably easier and quicker than mine when you want to keep the entire CD to a single mp3, but the method I suggest works well when you have individual tracks already ripped and want to keep them seperate but yet still play seamlessly and without pops/clicks when played in order.
     
    Last edited: 5 Dec 2007
  5. cpemma

    cpemma Ecky thump

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    Pretty expensive ($39). There's a freeware called MP3DirectCut, gives decent results but very slow making each individual joint when you've a lot to do.
    Not in this case, I suspect the programs I tried were removing a bit more than the MP3 tag data giving a hiccup in the backing rhythym. Some were worse than others.

    I've burnt the same wav files to a straight audio CD in the past, setting inter-track gap to zero in Nero, that worked OK.
     
  6. badders

    badders Neuken in de Keuken

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    I'm sure that the CD burning programs pretty much do what Zurechial said , i.e. perform a miniscule fade in/out between tracks.
     

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