AMR to M4A


Convert AMR to M4A - Convert your file now - online and free - this page also contains information on the AMR and M4A file extensions.

convert AMR to M4Aconvert AMR to M4A

How to convert a AMR to a M4A file ?

  1. Choose the AMR file that you want to convert.
  2. Select M4A as the the format you want to convert your AMR file to.
  3. Tell Zamzar where you want to receive your converted M4A file.
  4. Click "Convert" to convert your AMR file.

Zamzar Pro Tip: You can use the Quicktime player to open AMR files.


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File extension.amr
CategoryMusic File
DescriptionThe Adaptive Multi-Rate format was specifically designed for speech coding. Many phone providers use the AMR format to store short audio recordings but shouldn't really be used to store other audio such as music due to it's design. In 1999 AMR was adopted as the chosen speech standard for 3GPP. The AMR file is often converted into other formats to allow for use and ease of distribution.
Actions AMR to M4A - Convert file now
View other music file formats
Technical DetailsThe AMR codec uses eight source codecs with bit-rates of 12.2, 10.2, 7.95, 7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s and has a sampling frequency of 8kHz which is filtered to 200-3400 Hz. The AMR algorithm utilises link adaptation in order to be utilised with radio channel and capacity requirements.
Associated programs Apple QuickTime
Realplayer
VLC media Player
Winamp
Developed by 3rd Generation Partnership Project (3GPP)
MIME type  audio/amr
Useful links Further information on Multi-rate audio files
What is an AMR file ?
Convert AMR file
 

Convert AMR file

Using Zamzar it is possible to convert AMR files to a variety of other formats:

amr to aac (Advanced Audio Coding File)
amr to ac3 (AC3 Audio File)
amr to flac (Free Lossless Audio Codec)
amr to m4a (Compressed video file)
amr to mp3 (Compressed audio file)
amr to mp4 (MPEG-4 Video File)
amr to ogg (Ogg Vorbis Compressed Audio File)
amr to wav (Windows audio file)
amr to wma (Windows Media Audio)

AMR to M4A - Convert file now

Convert AMR to M4A

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File extension.m4a
CategoryMusic File
DescriptionM4A files are a type of audio file developed and popularised by Apple. Since 2007, music purchased through the iTunes store has been in m4a format, therefore accounting for over 15 billions files worldwide. MP4 and M4A files are often confused, and the two are quite similar, being both based on the MPEG-4 codec. However, M4A is a file comprising solely of audio, whereas MP4 may also contain video.
Actions AMR to M4A - Convert file now
View other music file formats
Technical DetailsM4A files are superior to MP3 in terms of the scale of compression and audio quality. The M4A file uses Apple's codec and resides within the MPEG-4 container. The main benefit of M4A is that files are compressed but are lossless. This means they can be decoded back to the original quality they were at the point of compression. Another benefit of M4A files are that do not carry any Digital Rights Management (DRM) protection associated with other files meaning they are less restricted.
Associated programs Apple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
Developed by Apple
MIME type  audio/mp4a-latm
Useful links Detailed guide to M4A
More detail on the MPEG4 format
Convert M4A file