Open Sound Meter
Summary
Open Sound Meter is a sound-measurement application for tuning audio systems in real time. Its analysis views include spectrum, sound pressure level, magnitude and phase response, impulse response, coherence, group delay, and spectrogram. Measurement projects can be saved and reopened, with each measurement retaining its settings. Other tools include a signal generator, wavelength calculator, equalization and modelling, plus virtual summation, difference, and averaging. The desktop version is described by its maker as open source, and contributions are invited on GitHub. Desktop versions run on Windows, macOS, and Linux; the iPad app is separate. The Remote API can share active or stored measurements between Open Sound Meter instances and with third-party applications. Cloud services store measurement and settings data, while the maker says audio recordings and raw audio data are not transmitted to or stored in the Cloud. Results depend on microphones, audio hardware, calibration, settings, and measurement conditions; the software alone does not replace calibration or certification of the measurement chain. The Community desktop version is free for registered users.
Who it is for
Open Sound Meter suits people tuning audio systems who need real-time measurement views and tools for comparing or modelling measurements. It may also suit users who want to save projects or share measurements through its Remote API.
What is good
- Provides real-time spectrum and SPL analysis.
- Saves measurements with their settings.
- Includes signal generation, equalization, and modelling tools.
- Desktop version is described as open source.
- Remote API shares measurements with third-party applications.
What to know first
- iPad app is sold separately.
- Cloud data is retained for a limited period after subscription ends.
- Results depend on hardware, calibration, settings, and conditions.
- Software alone does not replace measurement-chain calibration or certification.
Verdict
Open Sound Meter offers a wide set of measurement views and project tools for audio-system tuning. Results still depend on the measurement chain, and the maker says the software itself does not replace its calibration or certification.
Open Sound Meter plans and pricing
All plansCompared on audio analysis software
- Free plan
- Yesopensoundmeter.com
- Real-time analysis
- Yesopensoundmeter.com
- Offline file analysis
- Yesopensoundmeter.com
- Analysis views
- spectrum, SPL, magnitude, phase, group delay, phase delay, coherence, impulse, step, spectrogram, impedance, Nyquist plot, crest factoropensoundmeter.com
Facts
- Purpose
- Open Sound Meter is a sound measurement application for tuning audio systems in real time.opensoundmeter.com · 2 Oct 2026
- Analysis
- Its measurements include real-time spectrum analysis, magnitude and phase response, impulse response, coherence, group delay, spectrogram and SPL.opensoundmeter.com · 2 Oct 2026
- Project files
- Measurement projects can be saved and reopened, with each stored measurement including its settings.opensoundmeter.com · 2 Oct 2026
- Additional tools
- Additional features include a wavelength calculator, virtual summation, difference and averaging, a signal generator, equalization and modelling.opensoundmeter.com · 2 Oct 2026
- Open source
- The maker describes the desktop version as open source and invites contributions on GitHub.opensoundmeter.com · 2 Oct 2026
- Remote API
- The Remote API shares active and stored measurements between Open Sound Meter instances and is also available to third-party applications.opensoundmeter.com · 2 Oct 2026
- Cloud data
- Cloud features store measurement and settings data, but the maker says audio recordings and raw audio data are not transmitted to or stored in the Cloud.opensoundmeter.com · 2 Oct 2026
- Hosting
- The maker says its website, accounts and Cloud services are hosted on a dedicated server in Germany operated by Hetzner Online GmbH.opensoundmeter.com · 2 Oct 2026
- Accounts
- The privacy policy says account passwords are stored only as a hash and account data is retained while the account exists.opensoundmeter.com · 2 Oct 2026
- Cloud retention
- After a Cloud subscription ends, data remains viewable for six months, hidden for a further six months, and then is deleted if the subscription is not renewed.opensoundmeter.com · 2 Oct 2026
- Support
- Users can contact support by email or post in the Facebook group, and the maker offers paid consultations in Russian or English.opensoundmeter.com · 2 Oct 2026
- Consultation price
- Paid consultations are listed from $100 for one session lasting 1–1.5 hours.opensoundmeter.com · 2 Oct 2026
- Device limit
- Desktop Pro and Pro + Cloud entitlements are for one user on up to five simultaneously activated devices.opensoundmeter.com · 2 Oct 2026
Company
- Founded
- 2018opensoundmeter.com · 28 Sept 2026
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Sources
- opensoundmeter.com/en/· checked 2 Oct 2026
- opensoundmeter.com/en/about· checked 2 Oct 2026
- opensoundmeter.com/en/download/releasenotes/v1.2.1· checked 2 Oct 2026
- opensoundmeter.com/en/privacy· checked 2 Oct 2026
- opensoundmeter.com/en/support· checked 2 Oct 2026
- opensoundmeter.com/en/consulting· checked 2 Oct 2026
- opensoundmeter.com/de/agb· checked 2 Oct 2026
- opensoundmeter.com· checked 28 Sept 2026