How to convert AU to closed captions with Sonix

Sonix converts your audio-to-text using the latest artificial intelligence algorithms—it's fast, easy, beautiful, and affordable. We extract the speech from your AU file and help you create captions for your videos in minutes.

Convert AU to captions
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How to convert AU to closed captions with automated transcription 📋

Step 1: Create a free Sonix account to start converting your AU file to a closed caption file

Step 1

Sign up for a free Sonix trial account—includes 30 minutes of free AU to captions conversion.

Step 2: Upload your AU files from your computer, Google Drive, Dropbox, or by dragging it on the page.

Step 2

Upload the Audacity Audio File file(s) (*.AU) from your computer, Dropbox, Google Drive, or by dragging it on the page.

Step 3: Select the language spoken in your AU file, then click 'Start Transcribing Now.'

Step 3

Choose the language spoken in the uploaded AU file. We support over 37 different languages including Russian, Chinese, Spanish, and English. Click the 'Start Transcribing Now' button.

Step 4: Sonix does all the work so grab a tasty cupcake. Our servers will extract the audio from your AU file and convert it to SRT.

Step 4

Sonix will then automatically transcribe the audio from your AU file and convert it to a simple text format. Grab a cupcake, it will take only a few minutes.

Step 5: Once your AU was converted to text, you might need to polish up the transcript. Now, you can easily do that with our AudioText Editor.

Step 5

Use the Sonix AudioText Editor to polish your transcript before we convert it to a caption file. Simply type in your browser to correct any words in your transcript.

Step 6: Download a SRT version of your AU file by clicking Export and selecting 'Subrip caption file (.srt).'

Step 6

Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the closed caption version of your AU file. You can also adjust the character length and time duration length of each caption.

That's it! Your AU file has now been converted to closed captioning and is ready for the next step in your workflow!🎉

Thousands of incredible customers use SOnix to create closed captions from their AU files 💖

Google converts their AU audio files to closed captions with Sonix. You should too!Microsoft converts their AU audio files to closed captions with Sonix. You should too!NBC Universal converts their AU audio files to closed captions with Sonix. You should too!Harvard University converts their AU audio files to closed captions with Sonix. You should too!Stanford University converts their AU audio files to closed captions with Sonix. You should too!Yale University converts their AU audio files to closed captions with Sonix. You should too!ABC News converts their AU audio files to closed captions with Sonix. You should too!ESPN converts their AU audio files to closed captions with Sonix. You should too!Quartz converts their AU audio files to closed captions with Sonix. You should too!CNBC converts their AU audio files to closed captions with Sonix. You should too!CIBC converts their AU audio files to closed captions with Sonix. You should too!

Convert AU audio or speech to subtitle🔈

Frequently Asked Questions for Audacity Audio File (*.AU)

What is a AU file?

Audacity, an open source audio editor, breaks long tracks into small pieces so it can edit them more efficiently. Thus, when you save an Audacity Project File (.AUP), Audacity will automatically create a _data folder that has the same name as the AUP file and breaks the longer audio file into smaller chunks that have the .AU extension. Thus, when Audacity opens up the AUP Project File, it loads the individual AU files in the correct sequence automatically. The user should not move or rename and AU files in the _data folder.

Does Sonix transcribe audio files with a *.AU file extension?

Yes, Sonix does automatically transcribe audio files with a .AU file extension. Sonix is an online audio to text converter. Convert any audio (au, mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.AU files and converts them to text in a subtitle format.

Know anyone who needs to convert Audacity Audio File (.AU) to subtitle?

We'd appreciate it if you tell them about Sonix—the best way to convert AU to subtitle.

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Create closed captions from your Audacity Audio File files with Sonix 🚀

Sonix transcribes your audio and video files in over 37 languages so they are easy to search, edit, and share. Sonix is an online, fully-automated speech to text service that quickly converts Audacity Audio File files to captions. Sign up today and start transcribing.

Fast, accurate automated transcription

Includes 30 minutes of free transcription

Transcribe and translate confidently knowing you’re backed by our award-winning team who is ready to answer your questions. You can also visit our Support Center for tips, articles, and videos.

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