AAC to Text
Upload a standalone .aac recording and transcribe its spoken audio. Edit the transcript and export it as TXT, Word, or PDF.
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Excerpt from an AAC radio brief
Download exampleThe eastbound lane reopens at six this evening. Buses will use the temporary stop on Market Street until the permanent shelter is repaired. For service after seven, check the revised route notice.
How it works
Upload your file
In Speechyou Notes, select Upload, choose your recording, and select Upload & transcribe.
Review the transcript
Open the finished note and check the text against the recording. Use Edit transcript to correct names, terminology, or misheard words.
Export Text (.txt)
Open Export in the transcript and choose the file type. Save the file or share it with your team.
Accepted extension .aac
Transcription guide
Check the filename before uploading
A standalone AAC recording usually ends in .aac. AAC audio also appears inside files ending in .m4a and .mp4. Keep the original extension and upload a supported container as it was exported. If you received an AAC stream link, save an audio file from the source before opening the upload dialog.
Make a PCM WAV copy if decoding fails
If the file uploads but the selected model cannot decode it, switch to MultiLingual Pro in Transcription settings. If the recording still cannot be read, open it with the app that produced it and export a PCM WAV copy. Listen to that copy first to verify the speech survived the export.
Check the beginning and end of a clipped recording
AAC exports from broadcasts or recorder apps can start or end mid-sentence. Play the first and last few seconds while you review the transcript. Keep the cut visible in your notes when it changes the meaning of a quote, then export the reviewed text.
Choose the right source for a radio or recorder clip
For audio delivered as a standalone AAC file, use the saved recording rather than a player shortcut or a playlist. The player may open a stream from a link without storing the episode itself. If the source is available as a complete M4A or MP4 export, use that supported file without changing its extension. When you only need speech from a longer program, export the intended interval as PCM WAV and record the start offset if editors will match transcript references to the original program.
Before uploading an AAC recording
- Confirm that the file is a local recording and that you can seek past the opening.
- Check whether AAC is inside an M4A or MP4 container and keep the actual extension.
- Try MultiLingual Pro if a standalone AAC file is accepted but fails to decode.
- Play any PCM WAV fallback before uploading it to confirm the correct part of the program.
Frequently asked questions
Can I upload a raw .aac file?
Yes, the web app accepts .aac files. For a decoder error, try MultiLingual Pro or export the recording as PCM WAV from an audio editor.
Can I rename my .aac file to .m4a?
Keep the original extension. Renaming a file leaves its audio and container unchanged. Use a media editor if you need to make an actual conversion.
What if my video has an AAC audio track?
Upload the supported video file, such as MP4 or MOV. Speechyou transcribes the audio track in the video, so you can keep the original video export intact.