1) Upload AMR file to convert
Drop files here, or Click to select
2) Set converting AMR to MP3 options
3) Get converted file
File extension | .AMR |
Category | Audio File |
Description | The AMR format uses a speech coding pattern, which is now applied in the GSM system. It encodes compressed spoken audio data and uses multi-rate codecs, such as DTX, ACELP, CNG and VAD. There are eight bitrate values for AMR, ranging from 4.75 kb/s to 12.2 kb/s. This structure allows the codecs to create a group of 160 twenty-millisecond-long samples within a frame. AMR files can be played in a number of Windows-based media players, as well as mobile devices, such as Android, Apple, etc. Most users prefer to convert AMR tracks to MP3, WMA, etc. tracks. |
Associated programs | Media Player Classic |
Developed by | |
MIME type | audio/amr audio/3gpp audio/3gpp2 |
Useful links | More detailed information on AMR files |
File extension | .MP3 |
Category | Audio File |
Description | MP3 is the most popular audio file type based on MPEG-1 Layer III compression. Its lossy algorithm was developed in 1991. MP3 codes the sound almost with the same quality, as CD (16-bit stereo), providing compression in size 1 to 10 from the original WAF or AIFF tracks. The quality of MP3 seriously depends on the bitrate. It can be 128 - 256 kbps. Higher bitrates are also supported, but they seriously increase the file size. It is supported by all modern hard- and software players. |
Associated programs | RealOne WinAmp Windows Media Player iTunes |
Developed by | Fraunhofer Institute |
MIME type | audio/mpeg audio/MPA audio/mpa-robust |
Useful links | More detailed information on MP3 files |
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