AMRNB to AU Converter

Convert AMRNB to AU online quickly and easily. Just upload your file, convert it, and download the AU in seconds.

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What is AMRNB ?

AMR-NB (Adaptive Multi-Rate Narrowband) is an audio compression format used primarily for voice data. It enables efficient transmission of speech over mobile networks, optimizing bandwidth while maintaining sound quality.

AMRNB format  ▶

What is AU ?

The AU file format is an audio file format developed by Sun Microsystems, primarily used for storing sound data. It is often utilized in Unix systems and can support various audio coding schemes.

AU format  ▶

How to Convert AMRNB to AU in Just a Few Steps

  1. Upload your AMRNB file
    Drag and drop your AMRNB file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
  2. Choose AU as output format
    The converter is preset to AU, but you can select any other image format before converting.
  3. Adjust settings (optional)
    If you like, tweak output options such as resolution, quality, or compression before converting.
  4. Convert the file
    Click the 'Convert' button. The conversion takes only a few seconds.
  5. Download your converted file
    Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.

Start converting AMRNB to AU now — it’s fast, safe, and completely online!