For the Arduino demonstration, cheap microphone boards take the place of your ears. A servo motor points to the direction of sound. This would be a good gimmick for a Halloween prop or a noise ...

This microphone-shaped piece of circuitry was made with Arduino compatibility in mind, which means that voice search is just the beginning.

The Giga Display Shield (plug-in board) might fit the bill. It adds a 3.97inch 480 x 800 RGB touchscreen, digital microphone (MP34DT06JTR by ST), six-axis IMU (Bosch BMI270 inertial measurement unit), ...