Convert AAC to text

Sonix transcribes AAC audio files with exceptional clarity. As the successor to MP3 and Apple's preferred codec, AAC delivers superior audio quality that translates to highly accurate transcription results.

99% accuracy
5-min turnaround
60+ formats
Audio
Video
DOCX
SRT/VTT
PDF
53+ Languages
About This Format

Understanding AAC files

What is a AAC file?

High-quality compressed audio, Apple's preferred format

Advanced Audio Coding (AAC) is the default encoding used by Apple iTunes and the iTunes Music Store. It is a compressed audio file similar to an .MP3 file, but offers several performance improvements; examples include a higher coding efficiency for both stationary and transient signals, a simpler filterbank, and better handling of frequencies above 16 kHz; maintains quality nearly indistinguishable from the original audio source.

Common Uses

  • iTunes music
  • Apple podcasts
  • Streaming audio
  • Professional audio distribution

Audio Quality

Superior quality to MP3 at equivalent bitrates

Transcription Tips for AAC

  • AAC at 128kbps+ yields excellent transcription accuracy
  • Supports clear speech frequencies well

Where AAC Files Come From

  • Apple iTunes Store
  • Apple Music
  • iOS voice recordings
  • Podcast apps
10x
Faster than real-time
Get your AAC transcript in minutes
99%
Accuracy rate
Industry-leading AI for AAC files
53+
Languages
Transcribe in any language
30+
Export formats
Text, Word, PDF, and more
How It Works

Convert AAC to text in 6 steps

Step 1

Create account

Sign up for Sonix's free trial. Includes 30 minutes of free transcription.

Step 2

Upload file

Upload your AAC file from your computer, Google Drive, or Dropbox.

Step 3

Select language

Choose from 53+ languages spoken in your AAC file.

Step 4

Auto-transcribe

Sonix AI automatically extracts and transcribes your AAC audio.

Step 5

Edit transcript

Polish your transcript with our browser-based AudioText Editor.

Step 6

Export text

Download your AAC transcript as a text file or other formats.

Common Questions

Everything about AAC to text

Can Sonix transcribe AAC files?

Yes! Sonix fully supports AAC transcription. AAC's efficient encoding preserves speech clarity even at lower bitrates, making it excellent for transcription. Whether your AAC files come from iTunes, streaming services, or recording apps, Sonix handles them all.

Is AAC better than MP3 for transcription?

AAC provides better audio quality than MP3 at equivalent bitrates, which can marginally improve transcription accuracy for challenging audio. At common bitrates (128-256kbps), both formats transcribe excellently for clear speech content.

How long does AAC transcription take?

Sonix transcribes AAC files at approximately 10x real-time speed. A 30-minute AAC recording transcribes in about 3 minutes. AAC's efficient compression means smaller file sizes and faster uploads compared to uncompressed formats.

Can I transcribe AAC files from streaming services?

If you have downloaded AAC files from streaming services (legally, for personal use), Sonix can transcribe them. Note that DRM-protected content cannot be processed. Most podcast downloads and purchased music use unprotected AAC.

What AAC bitrate works best for transcription?

AAC at 96kbps or higher works well for speech transcription. The codec's advanced features handle voice frequencies efficiently. For best results with music or complex audio, 128kbps+ is recommended. Most commercial content uses 256kbps which is excellent.

Can I transcribe AAC files with multiple speakers?

Absolutely! Sonix's speaker diarization works well with AAC audio, identifying and labeling different speakers automatically. The format's quality preservation helps our AI distinguish between voices accurately.

Why Sonix

The best way to convert AAC to text

Lightning Fast

Convert AAC to text 10x faster than real-time with our advanced AI.

99% Accurate

Industry-leading accuracy for AAC transcription, powered by AI.

Easy Editing

Polish your AAC transcript with our intuitive AudioText Editor.

Affordable

Convert AAC to text at a fraction of the cost of manual transcription.

Related

More ways to convert AAC files

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Other file formats

MP3 to text
AU to text
OGA to text
FLAC to text
AIFC to text
AIFF to text
MTS to text
WAV to text
GSM to text
XSPF to text
See all supported file formats
Reviews

Trusted by professionals

4.98 rating from 211 reviews

I am very impressed with your program. The recording was not crystal clear and yet I received a perfect transcription...Wow! I would recommend this to anyone.
LL
Lynn L.
Surrey, BC, Canada
The best service available for my language (Czech) - thank you very much for saving me a LOT of work!
TF
Tamara F.
Prague, Czech Republic
It really accelerated my work and I was amazed by the accuracy, especially given that the video featured only non-native speakers.
MC
Martin C.
Nottingham, United Kingdom
I am thrilled with the level of accuracy and the easy if which I am able to listen to and adjust the transcript. It’s very user friendly.
JH
Jacqui H.
Brisbane, Australia
I was cleaning up the transcription of the recording of my Brazilian client. Sonix did a surprisingly good job. Sonix's accuracy in transcription is great.
LH
Laurence H.
New York, NY USA
Sonix has made my life so much easier. It's a complete tool for me to transcript all of our podcasts and I love it.
PP
Pavan P.
Bengaluru, India
It is so user friendly! Even for someone like me who is not technologically inclined. And, bonus! It has literally saved me HOURS of time trying to transcribe lengthy practice coun...
JD
Julie D.
Roanoke, VA USA
I love, love, love this service! Sonix is amazing! I plan to use the transcripts I've gotten so far to update the content of my podcast so that it will aid in SEO on my website. Ve...
KI
Kiki I.
Washington DC, USA
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