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











Use Sonix to quickly convert
Finnish 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 Finnish AU file~1 min
Click “Upload” and locate the Finnish AU file on your computer.
- 3Choose language: Finnish~10 sec
Select Finnish as the language spoken, then click “Transcribe”.
- 4Sonix transcribes your AU file~5 min
Sonix transcribes your Finnish AU file and converts it to Finnish text.
- 5Polish your Finnish transcript~2 min
Edit your Finnish transcript directly in the browser to correct any misheard words.
- 6Export Finnish text~10 sec
Export the Finnish text to MS Word, PDF, subtitles, or plain text.
Understanding Finnish AU files
Finnish has two broad dialect groups, Western and Eastern, but the bigger factor for speech recognition is the gap between standard written Finnish (yleiskieli) and everyday spoken Finnish (puhekieli), which shortens words and pronouns. Casual conversational recordings sound noticeably different from scripted broadcast or lecture speech.
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)
Finnish at a glance
- Speakers
- ~5.5 million speakers worldwide
- Writing system
- Latin alphabet (with ä and ö)
- Say hello
- Hei!
Frequently asked questions
How to improve the accuracy of your Finnish transcripts?
Start by improving the quality of the Finnish 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 Finnish AU file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Finnish 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 Finnish 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 colloquial spoken Finnish (puhekieli)?
Yes. Sonix transcribes the words as they are spoken, so casual recordings come back in colloquial forms, and you can standardize the spelling in the built-in editor before exporting.
Does Finnish transcription handle long compound words?
Finnish builds long compound and inflected word forms, and Sonix transcribes them as complete words. Any misrecognized rare compounds or proper nouns can be corrected in the editor.
Can Sonix create Finnish subtitles from a video?
Yes. Upload a Finnish video, transcribe it, and export the transcript as SRT or VTT subtitle files that work with most media players and video editing tools.
Trusted by professionals worldwide
I absolutely love what you guys have done with this. Sonix is literally a magical product that has helped me so much already and I will be using this for a long time coming.
Surprisingly accurate transcription across a number of European accents (Yorkshire, Scottish, Oxford, Italian!)
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