Direct M4A upload
Use the file from your recorder or approved messaging export.
Audio to Text · Sonorix
Turn M4A voice recordings into readable text.
M4A is common on phones and messaging apps. Upload the original file to Sonorix and get text without first exporting it to MP3.
Why this workflow matters
Phone recordings often stay trapped in a downloads folder because reviewing them takes too long. A transcript makes the content searchable and gives you a fast way to identify decisions, questions and next steps.
What you can do
Mobile-friendly workflow
The converter works in a browser and is designed for phone uploads.
Batch queue
Add several eligible files and let them process one after another.
Review before action
Verify critical details, then copy the text or move a property enquiry into the Real Estate analyzer.
A practical three-step workflow
Select M4A
Choose one or more approved recordings.
Wait for each result
Files are processed in queue order.
Copy or analyze
Use the text in notes, follow-ups or lead analysis.
Common use cases
- Phone voice recorder files
- Approved WhatsApp or messaging voice notes
- Property and customer call recordings
Questions people ask
Do I need to rename an M4A file?
No. Upload the original supported file.
Why can a transcript be inaccurate?
Low volume, cross-talk, noise, uncommon names and mixed languages can affect output.
Is a transcript legal proof?
A machine transcript can contain errors. Keep the source audio and obtain professional advice for legal or regulated use.
Related Sonorix resources
Use the workflow on a real file or property enquiry.
Start with the free public tool. Review AI output before using it for customer, legal, financial or contractual decisions.
Open the free audio-to-text tool →