Convert M4B to AMR online, for free.
Simply upload your M4B files and click the convert button. You can also batch convert M4B to AMR format.
We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).
Our M4B to AMR Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 2 hours.
MPEG-4 Audio Layer (M4B) is the file format that stores audiobooks and podcasts, primarily those that are available on iTunes. The cool thing about this file format is that, unlike MPEG-Audio Layer III (MP3), M4B can store digital bookmarks. This feature allows readers to pause and resume later, just like a physical bookmark in a printed book!
The default program for opening M4B files is iTunes. For cross-platform access, VLC media player is a very dependable option that works on Mac OS X and mobile.
On Windows, several options are available. They include Windows Media Player, MediaMonkey, Winamp, and Helium Music Manager.
Developed by: Apple Inc.
Initial Release: 1999
Adaptive Multi-Rate (AMR) is a compressed audio file that is often used for speech coding. The AMR speech codec focuses on narrowband signals, which makes it ideal for voice recordings and radio. It is used regularly in Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS).
Since AMR files are often used on mobile phones, including for MMS messaging, most 3G mobile devices are able to open them. AMR also opens with VLC media player, QuickTime, RealPlayer, and Xine.
Other software, such as the free audio-editing software Audacity, can open AMR files. Download audacity easily at SourceForge.net. Because AMR files are heavily compressed and focused on narrowband signals, they are not suitable for music files.
Developed by: 3rd Generation Partnership Project (3GPP)
Initial Release: 1999
FreeConvert.com can convert your other files to AMR format:
FreeConvert.com can convert your M4B files to these other formats:
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