Accurately convert
Catalan AU files to text
Sonix automatically transcribes your Catalan AU files to text in minutes. Access industry-leading artificial intelligence and the days of manually transcribing your Catalan AU files are long gone. Catalan speech to text: Sonix has been independently reviewed the most accurate Catalan automated transcription, translation, and subtitling platform.
Free to start — no credit card required.
Thousands of Sonix customers convert their Catalan AU files to text











Use Sonix to quickly convert
Catalan AU files to text
- 1Log into your Sonix account~30 sec
If you don't have one, you can sign up for Sonix's free account — Your free trial includes 30 minutes of transcription and translation.
- 2Upload your Catalan AU file~1 min
Click “Upload” and locate the Catalan AU file on your computer.
- 3Choose language: Catalan~10 sec
Select Catalan as the language spoken, then click “Transcribe”.
- 4Sonix transcribes your AU file~5 min
Sonix transcribes your Catalan AU file and converts it to Catalan text.
- 5Polish your Catalan transcript~2 min
Edit your Catalan transcript directly in the browser to correct any misheard words.
- 6Export Catalan text~10 sec
Export the Catalan text to MS Word, PDF, subtitles, or plain text.
Understanding Catalan AU files
Catalan splits into two broad dialect blocks: Eastern (including Central Catalan spoken around Barcelona, Balearic, and Alguerese in Sardinia) and Western (including Valencian, officially called Valencian in the Valencian Community). Eastern varieties reduce unstressed a and e to a schwa and unstressed o to u, while Western varieties keep these vowels distinct — a difference that affects how words sound in recordings.
AU technical specifications
- Codec
- µ-law, A-law, or linear PCM (Audacity block files use 32-bit float PCM)
- Container
- AU (Sun audio)
- Typical bitrate
- Varies by encoding; classic 8 kHz µ-law files are 64 kbps
- Sample rate
- 8–48 kHz typical (8 kHz for classic µ-law); the header supports arbitrary rates, and Audacity chunks use the project's rate
- Compression
- Container (varies)
Catalan at a glance
- Speakers
- ~10 million speakers worldwide
- Writing system
- Latin alphabet
- Say hello
- Hola!
Frequently asked questions
How to improve the accuracy of your Catalan transcripts?
Start by improving the quality of the Catalan AU file that you upload to Sonix. Please use high quality recording equipment, recording in a quiet environment, and ensure that your speakers are speaking clearly to ensure that your transcript is as accurate as possible.
Any advice for the Catalan AU file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Catalan AU file. By uploading a high quality version of your audio, we can give you the best level of accuracy.
Aside from AU, do you support other types of audio/video files?
Yes, we do! You can convert the following file types in Catalan with Sonix:
Why is my Audacity project folder full of small AU files?
Older versions of Audacity split a project's audio into small AU block files inside a _data folder so long tracks could be edited efficiently, and the .aup project file reassembles them in order. Avoid moving or renaming these chunks; open the project and export the audio instead.
How do I play a standalone AU file?
Standalone AU files use the Sun audio format and open in players such as VLC and editors such as Audacity. Converting to WAV or MP3 gives the broadest compatibility with modern software and devices.
Can Sonix transcribe Valencian audio?
Yes. Valencian is a variety of Catalan, so you can upload Valencian audio or video, transcribe it with the Catalan model, and edit the transcript in your browser.
Does Catalan transcription work if speakers mix in Spanish?
Occasional Spanish words and phrases are common in Catalan recordings and can appear in the transcript, but heavily mixed audio should be reviewed in the editor. If a recording is mostly Spanish, transcribe it as Spanish instead.
Can I create Catalan subtitles from my video?
Yes. After Sonix transcribes your Catalan video, you can export the transcript as SRT or VTT subtitle files, with every word individually timestamped.
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