Here is another spectrogram visualizer but with a twist, the frequency bins are the notes of a piano and hence you can use it to tune instruments or your voice.

Here is another spectrogram visualizer but with a twist, the frequency bins are the notes of a piano and hence you can use it to tune instruments or your voice. The project: https://github.com/aguaviva/GuitarTuner https://github.com/aguaviva/GuitarTuner Online demo: https://aguaviva.github.io/GuitarTuner/GuitarTuner.html https://aguaviva.github.io/GuitarTuner/GuitarTuner.html