SF to TTA Converter
Processing entirely on your device — large files may take a moment.
SF is the short-extension variant of the IRCAM sound file — same big-endian research samples, stored under the .sf spelling by older tools. Convert TTA to FLAC or MP3 for everyday playback.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How SF compares to TTA
| SF | TTA | |
|---|---|---|
| Structure | IRCAM Stream container | TTA header + frame blocks + ID3 |
| Compatibility | ffmpeg, archive tools | ffmpeg, TTA tools, fb2k |
| Best for | Rescuing legacy audio | Regional archive migration |
How to convert SF to TTA
- 1
Select your files
Drag & drop your SF files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to TTA". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted TTA file individually, or grab everything at once as a ZIP archive.
About the SF format
SF is the short-extension variant of the IRCAM sound file — same big-endian research samples, stored under the .sf spelling by older tools.
ffmpeg decodes it natively inside your browser — the audio track is re-encoded to your chosen format with nothing ever uploaded.
+Strengths
- ✓Decoded natively by ffmpeg
- ✓Runs entirely in your browser
- ✓Free, private, no watermarks
!Limitations
- −Legacy niche format
- −Modern tools rarely open it
- −Keep the original for archival round-trips
About the TTA format
TTA (True Audio) is a no-frills real-time lossless compressor: simple 32-bit crypto-free checksums, multi-threadable encoding and IDs at both frame and file level. It filled the lossless niche on slow connections and in Russian archive communities where FLAC arrived late.
Decoding is near-instant and lossless, so converting TTA to FLAC or MP3 costs nothing in fidelity — the audio is identical, the compatibility is finally universal.
+Strengths
- ✓Real-time speed on modest hardware
- ✓Simple, well-documented container
- ✓Error-tolerant frame structure
!Limitations
- −Compression ratios behind modern codecs
- −Ecosystem largely inactive
- −Tagging support is weak
Why convert SF to TTA?
There is a concrete reason this conversion exists: Legacy niche format TTA sidesteps that — Real-time speed on modest hardware If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this SF to TTA converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for SF to TTA?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Are tags like title and artist preserved?
Tag handling varies between target formats and this conversion focuses on the audio itself. For archival copies where tags matter, keep the original file; the converted copy is for playback and sharing.
Can I convert a whole folder of SF files?
You can select many files at once and they are processed in a single batch. Output files land in one ZIP download when there is more than one result.