Friture
friture.org
What it is
Friture is a free, GPLv3+ audio analyzer that displays signals in real time for examining audio and room or receiver behavior. Its views include a spectrum analyzer, rolling two-dimensional spectrogram, fraction-of-octave analyzer, scope, pitch tracker, delay estimator, and level display. The spectrum view shows frequency components, recent peaks, and the global maximum, with adjustable response time. Delay estimation uses cross-correlation between two input channels and works only in two-channel mode. The level view reports peak and RMS power in dBFS, using 25 ms and 300 ms response times. A built-in generator produces sine, pink-noise, white-noise, sweep, and burst signals. Downloads are offered for Windows, macOS, and Linux, including a Windows Store build and Linux AppImage. Other distribution packages or PyPI may work, though dependencies can require manual installation. Friture says it collects no microphone or personal data, uses no cookies, and does not store or analyze activity.
Spec sheet
- Purpose
- Friture is a real-time audio analyzer for understanding audio signals and room or receiver behavior.Read 11 Oct 2026 · friture.org
- Privacy
- The application does not collect microphone data or other personal data; the website says it uses no cookies and does not store or analyze user activity.Read 11 Oct 2026 · friture.org
- Support
- Users can report installation or runtime problems and submit feature requests through GitHub Issues.Read 11 Oct 2026 · friture.org
- License
- Friture is free and open source under GPLv3+.Read 11 Oct 2026 · friture.org
- Analysis widgets
- It provides a spectrum analyzer, rolling 2D spectrogram, fraction-of-octave analyzer, scope, pitch tracker, and delay estimator.Read 11 Oct 2026 · friture.org
- Audio generator
- It includes a generator for sine, pink noise, white noise, sweep, and burst signals.Read 11 Oct 2026 · friture.org
- Audio levels
- The level widget displays peak power with a 25 ms response time and RMS power with a 300 ms response time, in dBFS.Read 11 Oct 2026 · friture.org
- Audio technology
- Friture uses PortAudio through sounddevice for cross-platform audio capture, and NumPy and SciPy for audio processing.Read 11 Oct 2026 · friture.org
- Delay estimation
- The delay estimator uses cross-correlation to measure delay between two input channels and works only in two-channel mode.Read 11 Oct 2026 · friture.org
- Documentation
- The project says there is not much documentation currently and points contributors to its Sphinx manual and wiki.Read 11 Oct 2026 · friture.org
- Downloads
- The download page offers Windows, macOS, and Linux versions, with a Windows Microsoft Store option and a Linux AppImage.Read 11 Oct 2026 · friture.org
- Other distribution
- The site recommends checking distribution packages or using the PyPI package for other platforms, and notes some dependencies may need manual installation.Read 11 Oct 2026 · friture.org
- Security limitation
- The Windows installer is unsigned, and the macOS app is not notarized and may need to be manually whitelisted in macOS Security settings.Read 11 Oct 2026 · friture.org
- Spectrum
- The spectrum widget shows frequency components, recent peaks, and the frequency of the global maximum; its response time is configurable.Read 11 Oct 2026 · friture.org
Plans and prices
Friture Free Free and open source; Windows, macOS, and Linux Read 11 Oct 2026 · friture.org
Strong points and limits
Strong points
- Multiple real-time analysis views
- Built-in sine, noise, sweep, and burst generator
- Windows, macOS, and Linux downloads
- No microphone or personal-data collection
- Free GPLv3+ open-source license
Limits
- Delay estimator requires two-channel mode
- Windows installer is unsigned
- macOS app is not notarized
- Documentation is currently limited
Who it suits
Friture suits people who need live views of audio signals, levels, pitch, spectrum, or channel delay. It runs on Windows, macOS, and Linux.
Verdict
Friture combines several real-time measurement views with a signal generator and broad desktop availability. Users should account for the two-channel delay limit and manual security steps on Windows or macOS.
Where Specifiction places it
- Audio Analysis Software#16 of 438.0
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