Changelog

Every meaningful change to OnlineSoundMeter is documented here. We believe transparency about what's changed — and when — helps you trust the tool and understand any differences you notice between visits. This page covers feature additions, accuracy improvements, bug fixes, content updates, and infrastructure changes.

Coming Soon

Features currently in development or planned for upcoming releases:

  • Multilingual support — Interface translations for Spanish, French, German, Hindi, and Japanese to serve our growing international audience
  • PDF measurement reports — Export your session data as a formatted PDF document with graphs, statistics, and timestamp information for record-keeping
  • Hearing test tool — A basic pure-tone audiometry screening tool that plays calibrated tones at different frequencies to help users identify potential hearing loss (with clear disclaimers that it does not replace professional audiometric testing)
  • Measurement session history — Optional local storage of past measurement sessions so you can compare readings over time without any data leaving your browser
  • Custom alert thresholds — Set a dB level and receive a visual/audio alert when the measured sound exceeds your configured threshold

July 2026

Tool differentiation & SEO improvements

  • Differentiated all tool pages with unique interactive components (noise meter, mic test, background noise test, frequency analyzer, sound level meter) — each tool now serves a distinct use case rather than being variations of the same meter, improving user experience and reducing content overlap
  • Consolidated 5 overlapping blog posts into 1 comprehensive pillar article to eliminate keyword cannibalization and provide readers with a single authoritative resource
  • Added Content-Security-Policy header for XSS protection — hardens the site against script injection attacks while maintaining Web Audio API functionality
  • Added lastmod dates to all sitemap URLs to help search engines prioritize fresh content during crawling
  • Converted OG image from SVG to PNG for social sharing compatibility — SVG format was not rendering correctly on Twitter/X and LinkedIn previews
  • Generated PNG favicon fallbacks for broader device support, particularly older Android devices and some Windows environments that don't support SVG favicons
  • Added microphone=(self) to Permissions-Policy header to explicitly declare our microphone usage intent to browsers
  • Created /methodology and /accuracy documentation pages to demonstrate E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) signals for search engines
  • Expanded support pages (contact, terms, disclaimer) with comprehensive content for AdSense policy compliance
  • Improved internal linking structure between blog posts and tool pages to strengthen topical authority
  • Added structured data (BreadcrumbList schema) to all pages for enhanced search result appearance

June 2026

Content expansion & new tools

  • Published 27 blog articles covering decibel levels, noise safety, and measurement guides — built a comprehensive content library to establish topical authority in the online sound measurement space
  • Added speaker test tool (tone generator, stereo channel test, frequency sweep) — allows users to verify their audio output equipment is working correctly before relying on measurements
  • Added classroom noise meter with large-display projector mode — designed specifically for teachers who project the meter during class to encourage quieter behavior
  • Added background noise test with meeting/podcast readiness scoring — gives users a clear pass/fail indicator for whether their environment is suitable for professional audio work
  • Added decibel examples interactive tool (20–150 dB explorer) — helps visitors understand what different decibel levels actually sound like in real-world contexts
  • Added frequency analyzer with FFT spectrum visualization — enables users to see which frequencies dominate their environment, useful for identifying specific noise sources
  • Implemented CSV and PNG export for measurement data — users can now save their readings for documentation or further analysis in spreadsheet applications
  • Added privacy policy page documenting our no-data-collection approach and explaining that all audio processing stays in the browser
  • Implemented dark mode detection using prefers-color-scheme media query with manual toggle override
  • Added FAQ page addressing the most common questions received via email during the initial launch month

May 2026

Core platform launch

  • Launched onlinesoundmeter.com — the culmination of 3 months of development focused on creating the most accurate browser-based sound measurement tool possible
  • Core sound meter with real-time dB measurement using RMS calculation on raw audio samples, providing instant visual feedback as sound levels change
  • Web Audio API integration with AGC/noise suppression disabled — we explicitly set echoCancellation, noiseSuppression, and autoGainControl to false via MediaStreamConstraints to get the cleanest possible signal
  • Waveform and frequency spectrum visualization using canvas-based rendering at 60fps for smooth, responsive visual feedback
  • Session statistics (peak, average, minimum, dominant frequency) calculated in real-time to give users a comprehensive overview of their acoustic environment over time
  • Health score calculation based on WHO/OSHA guidelines — provides a simple color-coded indicator of whether current noise levels pose a risk with prolonged exposure
  • Dark mode support with system preference detection and persistent user override stored in localStorage
  • Mobile-responsive design tested on iPhone, iPad, Android phones, and tablets to ensure the meter is usable on any screen size
  • Privacy-first architecture (all audio processed locally) — zero audio data leaves the device, no WebSocket connections, no server-side processing
  • Google Analytics integration for understanding traffic patterns and popular features without tracking individual user behavior
  • Initial SEO setup including meta tags, Open Graph properties, sitemap.xml, and robots.txt
  • Deployed on Cloudflare Pages for global CDN distribution and fast page loads worldwide

How we version changes

We don't use semantic versioning — this is a website, not a library. Instead, we group changes by month and category. Major feature additions and methodology changes are always noted. Minor copy edits and styling tweaks are not listed unless they affect measurement behavior or user experience in a meaningful way.

Each entry includes context about why a change was made, not just what changed. We believe understanding the reasoning helps users evaluate whether an update is relevant to their use case.

This page is updated with each deployment. Last update: July 2026.