Privacy Policy

Last updated: November 1, 2026

Privacy Highlight: We do NOT record, upload, save, or transmit your audio files or microphone inputs. All signal processing and FFT calculations happen 100% inside your local web browser.

1. Audio Data & Microphone Permissions

When you click "Start Microphone" or "Upload Audio File", your browser prompts you for permission to access your audio hardware or file. This audio stream is fed strictly into the browser's local HTML5 Web Audio API context. At no point is audio data transferred to our web servers, external cloud APIs, or third parties.

2. Information We Collect

Like most websites, we may collect standard non-identifying telemetry such as browser user-agent strings, device operating system, pages viewed, time spent on site, and referring URLs to diagnose performance and improve user experience.

3. Cookies and Advertising Partners

We may work with third-party advertising partners (such as Google AdSense) to display advertisements on our website. Google uses cookies (including the DoubleClick cookie) to serve ads based on prior visits to our site and other internet websites. Users may opt out of personalized advertising by visiting Google Ads Settings.

4. Contact Information

If you have questions regarding this privacy policy, please reach out to us at privacy@spectrogramanalyzer.online.