Additional information about AMR file format
| 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 |
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Additional information about MP3 file format
| 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 |
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AMR to MP3 Converter is a simplified conversion tool. It enables the user to convert files without hassling through a long list of input and output formats. It is quick and easy to use software. Conversion: AMR to MP3 Converter is a tool which allows the user to convert Adaptive Multi-Rate (AMR) files to MP3 and inversely. How to Convert AMR to MP3? Click the “Choose Files” button to select your AMR files. Click the “Convert to MP3” button to start the conversion. When the status change to “Done” click the “Download MP3” button; Best Quality. We use both open source and custom software to make sure our conversions are of the highest quality. Merry CD-R ID3 RM to AMR Converter v.1.0.62 Merry CD-R ID3 RM to AMR Converter is an excellent CDA to MP3 converter which can convert CDA to MP3 and also a powerful CD to MP3 ripper which can rip CD to MP3 fast and easily. Free download is available. Free Amr To Mp3 Converter free download - Allok MP3 to AMR Converter, Free M4a to MP3 Converter, MP3 Converter, and many more programs. How to Convert AMR to MP3? Click the “Choose Files” button to select your AMR files. Click the “Convert to MP3” button to start the conversion. When the status change to “Done” click the “Download MP3” button; Best Quality. We use both open source and custom software to make sure our conversions are of the highest quality.
| Name | AMR | MP4 |
| Full name | AMR - Adaptive Multi-Rate | MP4 - MPEG-4 Part 14 |
| File extension | .amr, .3ga | .mp4, .m4a, .m4p, .m4b, .m4r, .m4v |
| MIME type | audio/amr | video/mp4 |
| Developed by | 3GPP | International Organization for Standardization |
| Type of format | Audio compression format | Media container |
| 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-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio and store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. |
| 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. | Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. |
| File conversion | AMR conversion | MP4 conversion |
| Associated programs | Audacity, FFmpeg, MPlayer, QuickTime, VLC media player | Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player |
| Wiki | https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec | https://en.wikipedia.org/wiki/MPEG-4_Part_14 |