| Name | AMR | MP3 |
| Full name | AMR - Adaptive Multi-Rate | MP3 - MPEG-1 or MPEG-2 Audio Layer III |
| File extension | .amr, .3ga | .mp3 |
| MIME type | audio/amr | audio/mpeg, audio/MPA, audio/mpa-robust |
| Developed by | 3GPP | Fraunhofer Institute |
| Type of format | Audio compression format | Digital audio |
| Description | The Adaptive Multi-Rate (AMR or AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1999 and is now widely used in GSM and UMTS. | MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio that uses lossy data compression. It is a common audio format for consumer audio streaming or storage and a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. |
| Technical details | AMR speech codec consists of a multi-rate narrowband speech codec that encodes narrowband (200-3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality speech starting at 7.4 kbit/s. Sampling frequency 8 kHz/13-bit (160 samples for 20 ms frames), filtered to 200-3400 Hz. | Lossy compression is designed to reduce significantly the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. For example, an MP3 file created using the setting of 128 kbit/s will result in a file about 1/11 the size of the CD file created from the original audio source. |
| File conversion | AMR conversion | MP3 conversion |
| Associated programs | Audacity, FFmpeg, MPlayer, QuickTime, VLC media player | VLC media player, MPlayer, Winamp, foobar2000. |
| Wiki | https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec | https://en.wikipedia.org/wiki/MP3 |
Additional information about AMR file format
Mp3 to amr converter free download. FFmpeg Batch AV Converter Web: FFmpeg Batch AV Converter is a free universal audio and vi. AMR to MP3 - Convert file now View other audio file formats Technical Details The 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. An audio file converter is one kind of file converter used to convert one type of audio file (like MP3, WAV, and BWF) into another type of audio file. In any case, you wish to modify an audio file format, feel free to download any one of the 10 best audio converter software we introduced here to change audio file formats on PC, Mac, and even. Free Download the Best AMR MP3 Converter. A highly recommended MP3 to AMR converter is UniConverter software. This software is well known for its performance, reliability and speed. It supports conversion of audios, standard videos and HD video formats. That means it can convert audios such MP3 to formats like AMR, AIFF, FLAC, M4A, AAC, M4R, AC3 and APE just to name a few. It also supports.
| File extension | .AMR |
| File category | AUDIO |
| Additional information about | The Adaptive Multi-Rate (AMR) codec is an audio compression format enhanced for speech coding. |
| Additional information | https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec |
| Useful links | http://pcsupport.about.com/od/fileextensions/f/amrfile.htm http://www.amrplayer.com/ |
| File conversion | Convert a file to AMR |
| Developer | 3rd Generation Partnership Project (3GPP) |
| Associated programs | Apple iPhone Audacity Android AMR Player Open Source software QuickTime Real Player VLS Media Player |
Additional information about MP3 file format
Free Amr To Mp3 Converter For Mac Free
Free Audio Converter To Mp3
| File extension | .MP3 |
| File category | AUDIO |
| Additional information about | MP3 is a common name for MPEG-1 and MPEG-2. It is an audio coding format for digital audio that uses a form of lossy data compression. It is common for consumer audio storage and streaming. |
| Additional information | https://en.wikipedia.org/wiki/MP3 http://whatis.techtarget.com/fileformat/MP3-MPEG-Audio-Layer-3-AC3-file |
| Useful links | http://computer.howstuffworks.com/mp31.htm |
| File conversion | Convert a file to MP3 |
| Developer | Moving Picture Experts Group |
| Associated programs | Real One iTunes WinAmp Windows Media Player |