🎵 Freqs for Freaks

I created this tool with the intention to help train my mapping between note names and frequencies in numbers in a more fun way, so that I can utilize the gift of perfect pitch in even more interesting and serendipitously unexpected ways. For example, the entomologist Olavi Sotavalta could distinguish insects by their wingbeat frequencies, and I've once correctly computed the frequency of a kilohertz transcranial magnetic stimulation signal as an human subject for my research lab. I hope this tool helps you on the way to becoming a more accurate biological FFT machine too. Please let me know your thoughts on this tool, and enjoy!

1. Press Play Tone to hear a randomly selected frequency.
2. Use the slider to find the approximate frequency, or type directly into the Hz input. The slider display can be toggled to show note names instead of Hz.
3. Press Submit (or Enter) to lock in your guess and see your score.
4. Press Replay to hear the tone again before guessing. In Hard Mode, each replay costs 10 points.

In Game mode, complete 10 rounds for a final score out of 1000 pts with a full summary. In Train mode, play endlessly and track rolling stats with the Stats toggle.

Each round is worth up to 100 points, split into two components:

This split means getting the right note name but the wrong octave still earns significant credit.