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Oscilloscope
Dual-channel display, triggering, XY mode, measurements and captured-sample analysis.
Version 26 · Silvia edition
Your complete audio measurement laboratory.
Oscilloscope, spectrum analyser, signal generator, distortion measurements, frequency response, impedance analysis and much more — integrated into one free Windows application.
2002First public releases
26Current major version
32/64 bitWindows builds
FreewareNo trial or subscription
The real interface
Visual Analyser 26 in operation
The dark default skin places waveforms and spectra at the centre of the workspace. Colours and appearance can be customised from Setup.
Open the gallery
Everything you need in one application
Use the sound card already installed in your PC, or connect dedicated external hardware when higher voltage ranges or special measurements are required.
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Spectrum analysis
Amplitude and phase, logarithmic and linear scales, octave analysis and smoothing.
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Signal generator
Sine, square, triangle, pulse, noise, DC and custom waveforms with smooth transitions.
Ω
ZRLC meter
Measure resistance, capacitance, inductance, impedance, phase, Q factor and loudspeaker parameters.
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Frequency response
Automated response measurements, calibration and modern ESS-based workflows.
THD
Distortion analysis
THD and THD+N measurements, sweeps, compensation and data logging.
Professional capability, freely available
Visual Analyser was created to give electronics enthusiasts, students, musicians, laboratories and engineers access to serious measurement tools without the cost of a complete bench setup.
More than a virtual instrument
VA also includes recording and playback, custom FIR filters, a graphic equaliser, cepstrum, cross-correlation, calibration, data logging, real-time acquisition from other applications and support for multiple audio APIs.
Visual Analyser in the media
VA has appeared in specialist publications, scientific work and television productions.
Faking It – Bugie Criminali
Visual Analyser visible in the programme’s analysis environment on NOVE.
Used in the studio
A wider studio view showing VA displays as part of the technical setting.
A project in continuous evolution
Born from a passion for electronics, DSP and software, VA has evolved for more than twenty years through research, experimentation and user feedback.
2002
The project begins
Early versions turn the PC sound card into a practical measurement platform.
2007–2011
Hardware and scientific adoption
Articles, dedicated interfaces, university work and the ZRLC measurement system expand the project.
2024–2026
The Silvia editions
New interface, 32/64-bit builds, modern audio back ends and advanced frequency-response tools.
Explore the interface
Browse current and historical screenshots of Visual Analyser.
Other SillanumSoft projects
Discover SolarPatrol and future software projects.
Education and research
Academic activityFrom independent software to an academic laboratory
Visual Analyser has supported university teaching, an undergraduate thesis and a PhD thesis at the University of Rome Tor Vergata, while remaining an independently developed project.