Converting #iPad CAF Audio to MP3 (EverNote and AudioNote)

A colleague at work recently introduced me to AudioNote, an iPad app that allows you to take notes and record audio at the same time. What's neat about AudioNote ($4.99, although it's also available as a free "lite" app) is that it synchronizes your typed or handwritten notes with the audio...and you can jump forward to that portion of the audio by tapping on the text.

For example, let's say I'm recording an awesome conversation or presentation. If I sense the speaker is going to say something memorable or something I want to find easily, I can write something and it will allow me to "track" what's been recorded at the moment I wrote it. Nifty, huh?

While I wouldn't recommend AudioNote for iPad handwriting recognition--for that, I recommend this app, MyScript Memo (free)--it does fit a niche...I wish AudioNote developers would partner with MyScript Memo for handwriting recognition...this would make it a perfect app!

I also occasionally find myself converting EverNote audio. Thankfully, it's pretty easy to open these audio files.

After recording a recent presentation--United Way Coordinator meeting--I found myself trying to work with the audio file--Core Audio File with a CAF extension--created by AudioNote. I wanted to convert the CAF audio file created by AudioNote into something a little easier to work with (e.g. MP3, OGG) and share.

I thought this might be a problem to convert, but there are several solutions you can take advantage of such as the ones below:

  1. Audacity (FREE) - Thankfully, the free open source Audacity audio editor opens CAF audio files and allows you to save/export them to MP3 or OGG format (or whatever else Audacity allows). I also was able to open EverNote audio recording and enhance the audio to make it "louder." (Note: For CAF files, Garageband on Macs will also do the trick!).
  2. Bigasoft's CAF Converter ($35) for Mac and Windows - Only caveat about this are the limitations, which aren't really elaborated on until you install the software and read the limitations:
    1. The maximum 5 minutes conversion of a more than 5 minutes file.
    2. With a less than 5 minutes file, you could only convert half of it.
  3. Switch for Multiple Audio File Conversions - You can use Switch--available for both Mac and Windows--to convert multiple CAF files.
Switch audio converter
Another great blog entry on this subject.

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Everything posted on Miguel Guhlin's blogs/wikis are his personal opinion and do not necessarily represent the views of his employer(s) or its clients. Read Full Disclosure


John Larkin said…
Informative and useful Miguel. Thank you. I like SoundNote on the iPad as well, in terms of synchronising audio with text. Export options are good as well. Another note taking app that I do recommend is the free PaperPort Notes from Nuance (the makers of Dragon Dictation) that does voice to text as well.

Audacity is an excellent application. Admittedly it is a little rough around the edges but considering the fact it is free it is mighty powerful and excellent value for money.
Joe said…
Hi Miguel,

I find Wappwolf is a great service for automatically converting audio files to mp3. I would recommend synchronising with a account, getting the email address for publishing to the Wappwolf automated folder and adding this to your contacts list. You can also configure Wappwolf to email the results back to you too!

Best wishes

Joe Dale
Amanda Durden said…
Hello! My name is Amanda Durden, I am a student at the University of South Alabama, and also an aspiring teacher. I loved your blog, I do not own a Ipad, but as a college student I have many important lectures on a daily basis that I as I read this post I thought of SO many uses for the apps you discussed. Thank you for your enlightening post!
Anonymous said…
i prefer Bigasoft Total Video Converter. Working as a professional CAF Converter, it helps to fast and batch convert CAF to all audio formats including convert CAF to WAV, MP3, WMA, APE, M4A, AAC, AC3, OGG, AUD, and AIFF. In addition to convert CAF, it can also help to convert between popular video and audio formats, and convert video to CAF and other audio.

step by step guide on how to convert CAF to WAV, MP3, AAC, M4a, OGG on Windows and Mac at

windows version at
mac version at
Marry said…
This is the great source for me to understand what I like in more detail. Thanks.
betterpluse said…
You may try Avdshare Audio Converter,it can help to convert CAF of all kinds to MP3, to WAV, to FLAC, AIFF, M4A, AC3, ACC, OGG, MP2, WMA and any audio format with the original CAF audio can find it at

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