- Extension
- .amr
- .gsm
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Nokia
- European Telecommunications Standards Institute (ETSI)
- 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.
- A lossy file format used to compress speech in Global Standard for Mobile (GSM) telecommunications. It is very effective for reducing audio file size. However, encoding and decoding audio signals severally is discouraged as the final product will have a lot of noise. Popular with some voice mail software but it is CPU intensive.
- MIME Type
- audio/amr
- audio/x-gsm
