File Extension AMR
File: filename.AMR
If you cannot open file extension AMR, you may have a file association error or need to install the appropriate application. We recommend you run the free scan below to identity Windows registry errors.Mime Type:
audio/amr
Related Information:
The AMR file extension is utilized by audio files named Adaptive Multi-Rate. It is created by contemporary cell phones (GSM), especially Sony Eriksson, as well as UMTS. It was created to encode speech by 3GPP or the Third Generation Partnership Project. The algorithm for ARM uses diverse bitrates for audio based encoding on the contents within it, to conserve both bandwidth and memory space.
The included compression schemes are DTX, CNG, VAD, and ACELP (Algebraic Code Excited Linear Prediction). The bitrates may range between 1.8 and 12.2 kps (kilobit per second). There are several programs that allow for conversion of file extension AMR files to better known formats, which are supported through common audio players such as media player from Windows or WinAMP.
These applications include RetroCode, AMR2WAV and Mobile ARM Converter. The Mime Type is audio/amr. This file is opened on the Mac operating system using the QuickTime Player from Apple or the RealPlayer from RealNetworks, which contains the program name of QuickTimePlayer.exe and RealNetworksPlayer.exe.
On the Windows platform, this program is opened using an AMR tool, Mobile AMR Converter, RealPlayer from RealNetworks and QuickTime Player from Apple. A file extension AMR's codec stores spoken audio using this file suffix though its quality is substandard when converted into other file formats for audio. It results in hiccups and voices that are cut off during recording.
Due to this noisy channel, the algorithm detects the channel finding it difficult to support a certain threshold of quality of audio and automatically reduces the voice encoding quality. The quality difference to the human ear is negligible but it has the effect of allowing conversation over a time without transmission hiccups. The algorithm ACELP harmonizes codec standards among diverse cellular systems types.
The included compression schemes are DTX, CNG, VAD, and ACELP (Algebraic Code Excited Linear Prediction). The bitrates may range between 1.8 and 12.2 kps (kilobit per second). There are several programs that allow for conversion of file extension AMR files to better known formats, which are supported through common audio players such as media player from Windows or WinAMP.
On the Windows platform, this program is opened using an AMR tool, Mobile AMR Converter, RealPlayer from RealNetworks and QuickTime Player from Apple. A file extension AMR's codec stores spoken audio using this file suffix though its quality is substandard when converted into other file formats for audio. It results in hiccups and voices that are cut off during recording.