Online AU to AMR Converter

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What is an AMR File?

AMR, short for Adaptive Multi-Rate Codec, is an audio compression format optimized for speech coding. It is commonly used in mobile telecommunications for voice recordings and VoIP applications.

Key Advantages of AMR Files:

Speech Optimization: AMR is designed to prioritize speech quality and intelligibility, making it suitable for mobile communications.

Low Bitrates: AMR achieves efficient compression at low bitrates, conserving network bandwidth.

Wide Adoption: Supported by most mobile devices and VoIP applications, ensuring compatibility.

Limitations of AMR Files:

Audio Fidelity: AMR sacrifices some audio quality for compression efficiency, making it less suitable for music or high-fidelity audio.

Use Case Specificity: AMR is primarily intended for speech coding and may not perform well for general audio applications.

Compatibility Outside Telecom: While widely supported in telecommunications, compatibility in other software and hardware may be limited.


AMR is valued for its efficiency in speech coding and widespread support in mobile telecommunications and VoIP applications.

How to Convert AU to AMR?

Step 1: Audio Upload

Upload your AU audio file by dragging and dropping it into the upload area or by clicking 'Browse' to select it from your device.

Step 2: Define Audio Settings

Select the appropriate settings for your AMR audio, including bitrate, sample rate, and other options.

Step 3: Start Conversion

Press the 'Convert' button to begin the process of converting your AU audio to AMR format.

Step 4: Download Audio File

After the conversion is complete, click on the 'Download' button to download your AMR audio file to your device.

Step 5: Convert Again

To convert another AU file to AMR, click on the 'Convert Another' button and repeat the process.

AU to AMR Conversion FAQs

1. How does the AU to AMR conversion work?

Our tool allows you to easily convert AU files to AMR. Just upload your AU file, and the conversion process will start automatically, resulting in a AMR file.

2. What is the method to upload AU files for conversion?

You can upload AU files by dragging them or using the 'Browse' button. Once uploaded, the conversion process will begin automatically, resulting in a AMR file.

3. How do I access the converted AMR file?

Use the Download link to obtain your AMR file after conversion. The download process is easy, and you can access your AMR file immediately after the conversion is complete.

4. How many AU files can I convert to AMR at the same time?

Multiple AU files can be converted to AMR in a single session. Our tool supports batch conversion, allowing you to process several AU files to AMR efficiently.

5. Can I convert another AU file after one is complete?

To convert another file, click 'Convert Another' or upload a new file. This feature enables you to initiate another AU to AMR conversion easily.

6. How do you protect my AU files during conversion?

Your AU files are safe as conversion occurs on the client side. This method ensures that your data remains confidential and is not exposed to third-party servers.

7. Are the AMR files high quality after conversion?

The AMR files will be of excellent quality post-conversion. We prioritize quality, ensuring that your converted AMR files meet the highest standards.

8. How big can AU files be for conversion?

Ensure your AU files are under 25MB for conversion. This size limit helps maintain the efficiency and speed of the conversion process, ensuring you get your AMR file promptly.

9. Is the AU to AMR conversion fast?

The conversion process is usually fast, depending on file size and connection speed. Our tool is optimized to provide quick conversions, ensuring you get your AMR file promptly.

10. Is there customer support for AU to AMR conversion?

Visit the 'Contact Us' page to get help from our support team. We are available to assist you with any issues or questions about the AU to AMR conversion process.