.AMR ファイル拡張子

Adaptive Multi-Rate Codec File

開発元	Ericsson
人気度	3.4 \| 750 票

AMRファイルとは？

An AMR file is an audio file saved in a compressed format developed by Ericsson. It is optimized for storing spoken audio and is used by many 3G cell phones to store voice recordings, which include MMS messages. Various media players can open AMR files, including VideoLAN VLC media player and Apple QuickTime Player.

詳細情報

VideoLAN VLC media playerで開いた.amrファイルのスクリーンショット — VideoLAN VLC media playerで開いたAMRファイル

AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, designed to compress human speech audio efficiently. Additionally, the files may be saved in the AMR-NB (Narrowband) or AMR-WB (Wideband) format. Wideband audio supports a broader frequency range, providing better sound quality.

AMRファイルの開き方

You can open and play an AMR file in VideoLAN VLC media player (multiplatform), Microsoft Media Player (Windows), or Apple QuickTime Player (Mac). You can also edit the audio data an AMR file contains in Audacity (multiplatform), provided you've installed Audacity's optional FFmpeg library.

AMRファイルの変換方法

VideoLAN VLC media player, FFmpeg, and Audacity (with the optional FFmpeg library installed) can convert AMR files to other audio file types. For example, VLC media player can convert AMR files to the following formats: