What is an amr file and how do I open an amr file?
AMR, or Adaptive Multi-Rate files are created using an audio data compression scheme optimized for speech coding. It uses link adaptation to select from one of eight different bit rates based on link conditions. The AMR audio format is used for mobile devices in various applications. AMR can be further categorized as AMR-NB, NarrowBand, and AMR-WB, WideBand.
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Detail amr file extension information:
File Format: Adaptive Multi-Rate Codec File
Primary Association: Compressed Audio Files
Mime Type: audio/AMR
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How to open amr file on Wikipedia
How to open amr file on Microsoft.com