Changelog
This changelog helps you see how Decibel Meter Lab is maintained and improved over time. It covers useful tool, measurement, reporting, and guidance updates.
Product updates
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Date:Tool or page: Methodology & Accuracy
What changed: Added clear explanations of the meter’s RMS calculation, reference offset, alignment, and the limits of browser sound readings.
Why it matters: Readers can judge when a comparison is useful and when a calibrated sound level meter is needed.
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Date:Tool or page: Spectrum Analyzer
What changed: Added live microphone and local-file analysis, peak hold, a spectrogram, and PNG/CSV exports. Controls and graphs adapt to narrow screens, and unsupported file types receive a clear message.
Why it matters: Users can inspect and share relative frequency content while understanding that playable file formats depend on their browser.
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Date:
What changed: Added dedicated tone and bass-testing tools, including WAV export from the Tone Generator.
Why it matters: Reference signals can be replayed for repeatable speaker and subwoofer checks.
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Date:Tool or page: Headphone Test
What changed: Added guided headphone checks and a PDF report saved in the browser.
Why it matters: Test notes and results can be kept in a report generated locally in the browser.
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Date:Tool or page: Decibel Meter reports
What changed: Added downloadable PDF summaries for completed sound-measurement sessions.
Why it matters: A session’s readings and context can be saved for later comparison.
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Date:
What changed: Added dedicated input and playback checks, with clear states when a browser lacks the required audio features.
Why it matters: Users can troubleshoot their setup before interpreting a measurement.
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Date:Tool or page: Decibel Meter
What changed: Introduced live level estimates, recent history, session summaries, and Align Reading for a trusted reference meter.
Why it matters: People can track changes with one consistent setup while keeping the reading’s limits in view.