Accurately convert
English AU files to text
Sonix automatically transcribes your English AU files to text in minutes. Access industry-leading artificial intelligence and the days of manually transcribing your English AU files are long gone. English speech to text: Sonix has been independently reviewed the most accurate English automated transcription, translation, and subtitling platform.
Free to start — no credit card required.
Thousands of Sonix customers convert their English AU files to text
Use Sonix to quickly convert
English 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 English AU file~1 min
Click “Upload” and locate the English AU file on your computer.
- 3Choose language: English~10 sec
Select English as the language spoken, then click “Transcribe”.
- 4Sonix transcribes your AU file~5 min
Sonix transcribes your English AU file and converts it to English text.
- 5Polish your English transcript~2 min
Edit your English transcript directly in the browser to correct any misheard words.
- 6Export English text~10 sec
Export the English text to MS Word, PDF, subtitles, or plain text.
Understanding English AU files
English spans many regional varieties, including American, British, Australian, Irish, Canadian, Caribbean, Indian, and Nigerian English, each with distinct pronunciation, vocabulary, and rhythm. Non-rhotic accents (many British and Australian varieties drop the "r" after vowels, as in "car" or "letter") and vowel shifts across regions are the variations most likely to affect speech recognition.
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)
English at a glance
- Speakers
- ~1.5 billion speakers worldwide, including roughly 380 million native speakers
- Writing system
- Latin alphabet
- Say hello
- Hello!
Frequently asked questions
How to improve the accuracy of your English transcripts?
Start by improving the quality of the English 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 English AU file that I upload?
Yes, please do not over-compress or over-filter the audio track of your English 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 English 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 British and Australian English as well as American English?
Yes. Sonix transcribes English recordings from any region, including British, Australian, Irish, Canadian, and Caribbean accents. Upload your file, review the transcript in the in-browser editor, and export it in your preferred format.
Does English transcription handle recordings with multiple accents?
Yes. A single English recording can include speakers with different regional accents, and Sonix transcribes them in one pass. Speaker labels help you attribute lines to each participant while you edit.
Can Sonix transcribe English audio with heavy background noise?
Sonix can transcribe noisy English audio, but cleaner recordings produce better results. Recordings with background noise, low volume, or crosstalk typically need more correction in the editor.
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More ways to convert & transcribe
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