Note: AUDIO API are something still in develop in many browser, please be patient if is not working on a specific browser.
Live on : https://linediconsine.github.io/UkuTuna/ (Note on chrome the microphone are accessible only on secure https connection) I create a Ukulele tuner based on my early experience with this instrument.
Let's me know any feedback from this
Based on https://github.com/cwilso/PitchDetect
Thanks