Do you want to convert a AMR file to a MP3 file? Don't download software - use Zamzar to convert it for free online. Click to convert your AMR file now. Check Out: Convert AMR to MP3 on Mac for Free with QuickTime & iTunes. Right click on AMR file and open with QuickTime Player. Go to File Export as Audio only, to save AMR as MPEG-4 audio file. Open the MPEG-4 audio file with iTunes, then go to File Convert Create MP3 Version. Find the created MP3 files in iTunes, click the three dots.
Amr Into Mp3
| 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 |