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World in Motion 🕹️ on Instagram: "This is a real research prototype focused on reproducing human speech using a physical mouth rather than digital audio output. The system relies on soft silicone lips, artificial skin, and mechanical actuators to replicate the movements of a human mouth during speech. Sound is produced through controlled airflow and vibration, closely resembling the mechanics of a real human vocal tract. These robotic mouths are primarily developed in Japanese research laborato