How to Convert AMR to AU Online?
Upload AMR File
Drag and drop the AMR files that you want to convert.
Convert AMR to AU
Click CONVERT to convert your AMR file(s).
Download Converted AU
Click DOWNLOAD to save your converted AU file(s).
Information about AMR and AU File Formats
AMR (Adaptive Multi-Rate Audio Codec) is a sound compression format that is designed for speech coding. It is today widely used in UMTS (Universal Mobile Telecommunication System) and GSM (Global System for Mobile Communications). Most modern mobile phones can save short sound recording clips in AMR format and can be converted to other standard sound formats using a third-party program like Wondershare UniConverter.
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3GPP (Third Generation Partnership Project)
AU is an audio format standard in early web pages NEXT systems. It is also called u-law or Sparc-audio format. Typically, AU files can store audio data and annotation blocks. Initially, it was a headerless audio format, but newer versions have a header, thanks to the six unsigned 32.bit words.
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