Convert FLAC to text

Sonix transcribes FLAC audio files with exceptional precision. As a lossless format, FLAC preserves every audio detail - perfect for transcribing high-quality recordings, music vocals, and professional audio where accuracy matters most.

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

Understanding FLAC files

What is a FLAC file?

Lossless audio compression - CD quality at half the size

Free Lossless Audio Codec file (FLAC) is an audio format similar to MP3, but lossless. What does this mean? The audio in a FLAC file is compressed without any loss in quality, whereas a MP3 file compresses the audio but usually lowers the quality of the file by excluding certain frequencies. A FLAC file works similar to how a ZIP file is compressed. Since FLAC is highly optimized for audio, you’ll receive a better compression ratio when compared to the ZIP compression algorithms. You can play compressed FLAC files in your favorite media player (including VLC, your car, or home stereo, or computer) just like you would an MP3 file (without having to uncompress it separately).
FLAC files are one of the fastest and most widely supported lossless audio codecs and is one of the few that are non-proprietary and has a well-documented open-source reference implementation. There are no attached patents for FLAC files. It was developed in 2000 and FLAC files discourage developers to not include any DRM features.

Common Uses

  • Audiophile music collections
  • Music archiving
  • High-fidelity audio
  • Lossless music streaming

Audio Quality

Bit-perfect lossless compression - identical to original

Transcription Tips for FLAC

  • Excellent for transcription - no quality loss from compression
  • Smaller than WAV but same audio quality
  • Well-suited for interview and podcast archiving

Where FLAC Files Come From

  • Bandcamp downloads
  • HD music stores
  • Audio archivists
  • Tidal streaming rips
10x
Faster than real-time
Get your FLAC transcript in minutes
99%
Accuracy rate
Industry-leading AI for FLAC files
53+
Languages
Transcribe in any language
30+
Export formats
Text, Word, PDF, and more
How It Works

Convert FLAC 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 FLAC file from your computer, Google Drive, or Dropbox.

Step 3

Select language

Choose from 53+ languages spoken in your FLAC file.

Step 4

Auto-transcribe

Sonix AI automatically extracts and transcribes your FLAC audio.

Step 5

Edit transcript

Polish your transcript with our browser-based AudioText Editor.

Step 6

Export text

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

Common Questions

Everything about FLAC to text

Can Sonix transcribe FLAC files?

Yes! Sonix fully supports FLAC transcription. Since FLAC is lossless, you get the highest possible audio quality for transcription - no compression artifacts to interfere with speech recognition. Perfect for transcribing vocals, interviews recorded in FLAC, or any content where accuracy is paramount.

Is FLAC better than MP3 for transcription?

FLAC preserves complete audio fidelity, which can provide marginally better transcription accuracy than MP3 for challenging content. For clear speech in quiet environments, the difference is minimal. FLAC's advantage shows in noisy recordings or subtle speech where every detail helps.

How does FLAC file size affect upload times?

FLAC files are about half the size of equivalent WAV files but still larger than MP3. A 5-minute FLAC file is typically 20-50MB versus 5-10MB for MP3. Upload times are longer but transcription speed is the same once uploaded - about 10x faster than real-time.

Can I transcribe music FLAC files to get lyrics?

Sonix can transcribe vocal content in FLAC music files. Results are best for a cappella or spoken word recordings. Songs with heavy instrumentation are more challenging - the AI focuses on vocal frequencies but loud music can reduce accuracy.

Will high-resolution FLAC (24-bit/96kHz) transcribe better?

High-resolution FLAC provides no transcription advantage over CD-quality (16-bit/44.1kHz). Speech frequencies are fully captured at CD quality. Higher resolutions increase file size without improving transcript accuracy.

Should I convert FLAC to MP3 before transcribing?

No need to convert! Sonix accepts FLAC files directly. Converting to MP3 would reduce quality (lossy compression) while saving some upload time. If you have good internet bandwidth, transcribing FLAC directly preserves maximum audio quality.

Why Sonix

The best way to convert FLAC to text

Lightning Fast

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

99% Accurate

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

Easy Editing

Polish your FLAC transcript with our intuitive AudioText Editor.

Affordable

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

Related

More ways to convert FLAC files

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OGG to text
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See all supported file formats
Reviews

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My transcript work flow is so fast now. It takes me half the time it used to. So glad i found you :)
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Shimrit G.
Tel Aviv, Israel
Sonix is easy to use and high accuracy of the transcriptions. Very pleased!
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Juan H.
Bakersfield, CA, USA
Wow. SPEED. Nice format, easy to read, liked the time stamps and speaker notification. Not a lot of formatting I had to strip before using. Simple.
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Becky B.
Washington DC, USA
I'm very happy with the experience. The Spanish translations are superb. I'm in awe!
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Luis V.
San Jose, Costa Rica
I would absolutely, 100%, recommend you to a friend. I think you have an incredible program.
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Melissa W.
Grass Valley, CA, USA
Your product is amazing and transcribed my files almost all accurately!
OD
Oron D.
Ramat Gan, Israel
Awesome and I was really shocked when I saw how carefully my mp3 file was transcribed!!
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Rosalind B.
Tehran, Iran
I have been a dialogue system researcher for half a decade now. I had build my own app for doing the transcriptions. Sonix was clearly better than what I had. I made the switch!
RM
Ramesh M.
Portland, OR USA
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