Click Add Your Media and upload your MP3 file.
Make sure that the output format is set to AU.
Click Convert.
Popular converters:
You can also convert your files with our powerful desktop app.
If you need to convert multiple files or your file is too large for the online converter, try the desktop alternative. The Movavi converter is a versatile audio, video, and image format changer. It deals with over 180 file formats, can convert files in bulk quickly, with high output quality and resolution. Its SuperSpeed mode gives you the fastest conversion speed and no quality loss. It has versions for both Windows PC and Mac and is really lightweight, allowing you to process photos, movies, and music files even on a weak computer.
How to convert MP3 to AU fast and easy? Read the guide below to find out!
Step 1. Download and install the Movavi converter
How to use a file converter? First, download the version of the software for Microsoft Windows or Macintosh, launch it, and proceed following the on-screen instructions. When the app is installed to your computer, it will run automatically.
Locate the MP3 files you want to convert and drag-and-drop them into the program’s window. The application can convert big batches of files – there’s no limit to how many files you can transfer at once.
In the Formats menu, select the file type you want to turn your media into and choose the target format for the files. Also, you can change the conversion settings: choose a different bitrate, resolution (including HD, Ultra HD, and even 4K), codec, etc. Pay attention to the SuperSpeed label: it indicates that the conversion will be performed with a very high speed and without losing quality.
To specify the output folder, click the Save to button. Hit the Convert button to launch the process. When the converting is done, the new media files will be saved to the chosen folder.
Now you know how to change the file format using the Movavi converter. WIth this tool, you can also reduce the file size, cut out clips from videos, crop pictures, and create animations from your favorite movies. Get the free trial version and test it out!
To convert MP3 to AU for free online is a convenient way to modify your audio files. MP3 and AU are two audio formats with distinct characteristics and applications.
MP3, short for MPEG-1 Audio Layer 3, is known for its efficient compression, making it suitable for streaming and portable devices. In contrast, AU (Audio Interchange File Format) offers high audio quality but results in larger file sizes.
To understand how to convert MP3 to AU online, you can explore various websites that provide this service at no cost. Simply search for "how to convert MP3 to AU online for free" to find suitable options.
Converting MP3 to AU for free is valuable in specific scenarios. If you have MP3 files and require higher audio quality for professional applications like music production or sound engineering, this conversion can enhance audio fidelity. Conversely, if you possess AU files and need to save storage space or make them more accessible online, converting to MP3 can be advantageous.
In summary, knowing how to convert MP3 to AU online for free empowers you to adapt your audio files to different purposes. Whether you prioritize compression efficiency or audio quality, these online tools provide a flexible solution for managing your audio content.
What is MP3?
Full name
MPEG-1 Audio Layer III
Format type
Audio
Developed by
Specialists from Fraunhofer Society
Description
The MP3 format was created in 1991, and its specification was published in 1993 as a part of the MPEG-1 standard. Originally, MP3 was made as a proprietary format, but now it is free to use by anyone. MP3 matured into the most widespread audio format in the world. It is probably not possible to find a program that can’t open and play MP3s. But technologies are always developing, and many broadcasting companies now prefer other file types with better compression and less sound quality reduction.
File extension
.mp3
Technical details
MP3 (MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a format for the lossy compression of sound. The quality and size of MP3 files are defined by their bitrate. So, if you’re wondering how to compress your audio files while keeping the quality, consider converting them to MP3 with a bitrate of 192 kbit/s or higher. Then you probably won’t be able to hear any difference in the playback.
Associated programs
Almost any multimedia program
What is AU?
Full name
Au File Format
Format type
Audio
Developed by
Sun Microsystems
Description
What is AU? AU is short for “audio”, which means that this file type was created to store sound. It is not a very common format; it is primarily used on Unix systems, which are not widely themselves. Still, playback of AU files on Windows or Mac is also possible; several programs are able to open these audio files. Below, you’ll find information on how to play AUs.
File extension
.au
Technical details
The AU format specification has three main parts: a header, an annotation, and the main block that contains audio data. This data can be encoded by μ-law, PCM, or A-law algorithms. Aside from the programs listed below, you can also use Java apps to play AU files.
Associated programs
Windows Media Player, QuickTime, VLC, and others
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