Change one thing about your mouth.
Hear a new sound appear.
This isn't a recording — your device is synthesising the sound live from the shape of a mouth. Drag the dot inside the box: up/down changes how open your jaw is, left/right changes where your tongue sits. Every spot is a real vowel. Nothing leaves your device.
◀ tongue front
tongue back ▶
▲ mouth closed
▼ mouth open
Press and drag inside the box to morph the vowel. Tap a labelled dot to hear a known vowel. 🔊 turn your volume up.
Now try consonants
Same trick, different air. Tap one — then flip the switch and feel how voicing turns s→z, f→v. (This is the same voicing you feel buzz in Feel the Sound.)