- Extension
- .amr
- .cvs
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Nokia
- Motorola
- Description
- An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is used by many 3G cell phones for voice recordings such as MMS messages. AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.
- Continuously Variable Slope Delta modulation is a voice coding method. It is a delta modulation with variable step size (adaptive delta modulation), first proposed by Greefkes and Riemens in 1970.
- MIME Type
- audio/amr
- application/octet-stream
