Convert AMR to M4A
Online music converter
Convert your file from Adaptive Multi-Rate Codec File to MPEG-4 Audio Layer with this AMR to M4A converter.
Try the M4A conversion with a AMR test file
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AMR to M4A conversion with our AMR example file.
AMR, Adaptive Multi-Rate Codec File (.amr)
AMR is a compression format to optimize speech coding consisting of multi-rate narrowband speech codecs. AMR files can be recorded with mobile phones. To accomplish random access or synchronization of audio and video the 3GPP format can be utilized. AMR uses ACELP, DTX, VAD, and CNG to code the 160 20-millisecond samples contained in each frame. AMR files are used for voice recording though the...
What is AMR
M4A, MPEG-4 Audio Layer (.m4a)
M4A is short for MPEG-4 Part 14 and the file type was created by Apple in 2004 using the QuickTime File Format. The iTunes store runs on M4A file downloads (15 billion files worldwide). It is a digital multimedia container format used to store audio components, but can store other data (e.g. images) as well. MPEG-4 Part 14 files can be saved under the extension M4A and MP4 (the difference being...
What is M4A