That said, it isn’t widely used in other non-Microsoft devices, and it doesn’t really offer any benefits that aren’t also served with an AAC or OGG. If you use a Windows machine, you’re likely familiar with it, as it was developed by Microsoft and commonly used on their operating systems. WMA stands for Windows Media Audio, and there are both Lossy and Lossless formats for it. That said, it’s a file type that has had some trouble competing with the MP3s and AACs of the world, so it’s often overlooked. It’s also a superior form of audio quality and compression. Vorbis files are open source, unlike most of the other file types we discuss. OGG is a sort of digital container that holds Vorbis files. Like the AAC, the sound quality is generally better. It was originally built by Apple for the iTunes Music store. M4Ps are merely a version of AAC that have digital rights management included. That said, it is a common format used by a variety of companies, including YouTube, the iTunes library, most smart devices, and consoles. However, AAC has never really caught on the same way that MP3s have, at least for the majority of us consumers. The AAC format stands for Advanced Audio Coding, and it’s actually a superior form of compression when compared to the MP3. M4A is more common for music, and the M4B file is more common for audiobooks and podcasts, since it allows for additional metadata like bookmarking, which M4A does not have. This is also the format used for music from the Apple store. The compressed format used by Apple, just as the AAX is used by Audible, is the M4A or M4B. Audible does the transfer for you, but it’s worth knowing that it exists, and that this is what Audible is using to deliver your audiobook files to readers. This is not a file type that you will ever have to worry about creating. AAX was an audiobook format developed by Audible using an MPEG-4 container that also allowed for the file to be encrypted with DRM. You might see an AAX file if you find the actual files of your Audible audiobooks. This means that audiobooks in MP3 are not going to be much different than higher-quality formats. It stands for MPEG audio layer 3, with layer 3 being its own unique coding scheme.Īn MP3 file is the most common lossy audio format, and though the quality is slightly diminished, vocals still come through without much loss. MP3 uses its audio coding compression to remove a lot of superfluous data that most of us don’t hear anyway. MP3īy far the most popular (possibly of any file type) is the MP3 (.mp3). So let’s take a look at each of the compressed lossy audio formats for audiobooks. Still, it’s common to use these as audiobooks, and ACX actually recommends the MP3 as their main file format. This significantly decreases the audio file size, but can result in loss of quality. The term “lossy” means that the audio has undergone a compression process. We’ll take a look at each type, but know that the only ones you really need to worry about are MP3, WAV, and FLAC. When discussing audiobooks and audio file types, there are quite a number of formats that exist, but only a few that are relevant to audiobook creators. The file types you need for submitting to ACX and Findaway Voices.The best formats for lossy or lossless audiobooks.The basic file types used for each audiobook market.
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