1. Basic requirements
- A modern browser with support for audio capture, AudioContext and microphone permissions.
- An available microphone on the device that the browser can use during the session.
- Access to the site through HTTPS when the test is not performed from localhost.
2. How to start
- Open Nota Magica and enter the detector.
- Press the button to enable capture.
- Grant microphone permission when the browser requests it.
- Sing a note or play the instrument near the microphone.
- Watch the note, the frequency and the visual response on screen.
- When you finish, use the button to stop the detector.
3. If no useful reading appears
- Move the sound source closer to the device microphone.
- Reduce background noise or try in a quieter place.
- Check that the browser is using the correct microphone.
- Stop and enable the detector again if the audio session got stuck.
- Try another sustained note or a more stable sound source.
4. If the browser blocks the microphone
Check the browser permission icon and confirm that the site has access to the microphone. If the permission was denied before, you usually need to enable it again from the browser or operating system settings and reopen the detector.
5. Visible notation
The detector can switch between letter notation and its natural note equivalent. The top row works as a quick reference to identify the series shown on screen without depending on extra menus.
6. Privacy during use
Microphone access is only requested when the user activates the detector. The current implementation uses that signal to calculate the visible reading during the session and does not provide its own function to save user recordings. If you need more detail, review the privacy policy published on the site.