Data Security

This page explains exactly how VocalRangeCalculator.com handles the data involved when you use its tools — specifically what happens to your voice when you use the microphone-based tools, what data the Frequency to Note Converter captures (none), and how the site handles other personal information such as contact form submissions.

Why This Page Exists

VocalRangeCalculator.com uses your microphone for six of its seven tools. That is a reasonable thing for users to want to understand clearly — not with reassuring marketing language, but with a specific, honest technical explanation of what the tools actually do with your voice.

This page provides that explanation.

Part 1 — Microphone-Based Tools: What Happens to Your Voice

Six tools on VocalRangeCalculator.com require microphone access: the Vocal Range Calculator, Vocal Range Tester, Voice Type Test, Pitch Detector, Octave Range Test, Vocal Range Comparison, and Vocal Register Test.

What happens when you use a microphone tool

Step 1 — Permission request. When you click Start on any microphone tool, your browser displays its standard permission prompt asking whether you will allow vocalrangecalculator.com to access your microphone. This is a browser-level security feature. VocalRangeCalculator.com cannot access your microphone without your explicit approval at this prompt.

Step 2 — Local audio capture. If you grant permission, the browser opens a real-time audio stream from your microphone into the Web Audio API — a standard technology built into modern browsers for processing audio locally on your device.

Step 3 — In-browser processing. Your voice is analysed entirely within your browser tab using the Web Audio API. The audio signal is converted from a waveform into a frequency spectrum using Fast Fourier Transform (FFT) analysis, and the fundamental frequency (your pitch) is identified and mapped to the nearest musical note. All of this happens locally — inside your browser, on your device.

Step 4 — Result generation. The detected pitch data is used to calculate your vocal range, voice type, octave span, register boundaries, or other tool output. The result is displayed to you on screen.

Step 5 — Session end. When you close the tool page or navigate away, the audio stream is terminated. All audio data in the browser’s memory is cleared. Nothing is retained.

What VocalRangeCalculator.com never does with your voice

Does not record — no audio file is created at any point during or after your session
Does not store — no audio data is saved anywhere on any server
Does not transmit — no audio is sent over the internet to VocalRangeCalculator.com or any third party
Does not profile — your voice is never used to build any user profile, voice print, or behavioural dataset
Does not share — your audio is not accessible to Google AdSense, Google Analytics, or any other service integrated into this website

Advertising cookies, analytics cookies, and all other tracking systems on this site operate entirely separately from the audio processing that occurs in the tools. Your voice data and your browsing behaviour are never connected.

Microphone permission management

You can revoke microphone permission at any time through your browser settings without affecting your ability to browse the educational content and articles on the site. Instructions for resetting microphone permissions in Chrome, Firefox, Safari, and Edge are in the Troubleshooting page.

Part 2 — The Frequency to Note Converter: No Audio Captured

The Frequency to Note Converter is entirely different from the six microphone tools described above.

This tool does not use your microphone. It does not capture any audio. It does not require microphone permission. It performs a pure mathematical calculation — you type a number (a frequency in Hz), and the tool converts it to the nearest musical note using the formula of equal temperament tuning (A4 = 440 Hz, semitone ratio = 12th root of 2).

No audio data of any kind is involved in this tool’s operation. There is nothing to capture, store, transmit, or protect. The calculation happens entirely in the browser’s JavaScript runtime using the number you entered.

Part 3 — Contact Form Data

If you contact VocalRangeCalculator.com through the Contact page, the following information is received:

Your email address
Your name (if included)
The content of your message

This information is used only to respond to your inquiry. It is not shared with any third party for marketing or promotional purposes. It is not added to any mailing list. Contact data is retained only as long as necessary to resolve the inquiry and is then deleted.

Part 4 — Analytics and Advertising Data

VocalRangeCalculator.com uses Google Analytics to measure website traffic and Google AdSense to display advertising. Both services may set cookies on your device and collect browsing-level data such as pages visited, time on site, and general geographic location.

Neither Google Analytics nor Google AdSense has access to your microphone, your voice recordings, or your tool results. The audio processing that occurs during tool use is entirely isolated from the analytics and advertising systems.

For full details on cookies and advertising data, see the Cookies Policy and Privacy Policy.

Part 5 — HTTPS and Transmission Security

All pages on VocalRangeCalculator.com are served over HTTPS. The connection between your browser and this website is encrypted, protecting any data transmitted during your session — including contact form submissions.

Because the audio processing in the microphone tools occurs entirely within your browser and no audio is transmitted over the network, HTTPS encryption is not relevant to voice data specifically. But it does protect any other information exchanged during your visit, including contact inquiries.

Part 6 — Reporting a Security Concern

If you discover a security issue, a data handling practice that does not match what is described on this page, or any behaviour from the tools that concerns you, please report it via the Contact page.

Please include:

A description of the issue or behaviour you observed
The tool or page where you encountered it
Your browser and device type
Any steps needed to reproduce the issue

All security reports are reviewed personally by Conan and responded to within 48 hours. Verified issues are addressed promptly.