Spectrum Analyzer – Pitch Diagram App

mic off

Ready to listen.

Press Start, allow your microphone, then play, sing or make any sound.

Start

Your audio stays on this device. The browser asks for the mic only when you press Start.

Your audio stays on this device.

SETTINGS

In the iOS & Android app

Peak labels: Note, frequency and cents
Note labels: Letters

IN THE iOS & ANDROID APP

What the app adds

Named peaks: Stable partials are labeled with note, frequency and cents.; On the web: unlabeled curve
More sensitive: Faster response and higher resolution.; On the web: standard resolution
Note labels: Letter names or solfège.; On the web: frequencies only

The apps are free to download, with an optional yearly subscription.

MIC HELP

If the mic is blocked, click the lock or microphone icon in your browser's address bar, allow the microphone for this site, then reload the page and press Start.

Nothing happens when you play? Check that the right input is selected in your system's sound settings.