acoustic modem (noun)

1. The protagonist in the anime series used an acoustic modem to communicate with others in different dimensions.

2. The suspenseful horror movie depicted a scene where the protagonist desperately tried to establish a connection using an acoustic modem in a haunted house.

3. The film showcased a group of scientists using an acoustic modem to communicate with extraterrestrial life in their quest to decipher a series of mysterious signals.

4. The superhero comic depicted the protagonist battling an evil mastermind who possessed a powerful acoustic modem capable of controlling minds.