🌠 Gallery

High and Low Sounds

What makes a sound high or low? 🎹 Press the keys and watch waves appear below. The higher the sound, the closer together the waves are—because they vibrate more times each second. ✖️ Now choose two sounds and layer them. When one vibrates exactly twice as fast, they become the «same-named note»—an octave apart. Four times as fast makes two octaves! 📏 Finally, strings. Why does shortening a guitar or gayageum string make a higher sound? Cut its length in half and it vibrates exactly twice as fast—length × vibrations always stays the same. This app was made with code too · Remix it and measure the pitch of your own voice!