FMIT (Free Music Instrument Tuner) is a graphical application for tuning musical instruments using real-time audio analysis. It estimates the fundamental frequency of an incoming signal and helps musicians determine how closely a played note matches a desired pitch.
The application is designed for instruments such as guitars, violins and other acoustic or electronic sound sources. Its display can be kept simple for ordinary tuning or expanded to show more detailed information about the waveform and its harmonic structure.
FMIT also supports alternative tuning systems, making it useful for musicians working with microtonal music and non-standard scales.
This is free and open source software.
Key Features
- Real-time estimation of the fundamental frequency of an audio signal.
- Graphical indication of pitch deviation from the target frequency.
- Pitch error history for monitoring tuning stability.
- Input volume history showing changes in signal level.
- Waveform display for examining the captured audio signal.
- Analysis of waveform periodicity.
- Display the relative amplitudes of harmonics.
- Real-time discrete Fourier transform analysis.
- Statistical information about measured frequencies.
- Microtonal tuning using Scala scale files.
- Custom tuning scales expressed in cents.
- Individually selectable analysis views.
- Simple display mode with unnecessary panels hidden.
- Support for JACK, ALSA and other available audio input systems.
- Cross-platform support – runs on Linux, macOS, and Windows.
Website: github.com/gillesdegottex/fmit
Support:
Developer: Gilles Degottex
License: GNU General Public License v2.0
FMIT is written in C and C++. Learn C with our recommended free books and free tutorials. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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