Historical Communication Devices

noun a type of modem that uses audio tones to transmit and receive data over a telephone line

• The acoustic coupler is a device used to connect a modem to a telephone line by using audio tones.
• I had to use an acoustic coupler to connect to the internet back in the day.
• Do you remember those old-school acoustic couplers for dial-up internet?
• The acoustic coupler serves as a bridge between the modem and the telephone line.

noun aetherophone

• The aetherophone was an early experimental device used to transmit sound wirelessly.
• I found an old aetherophone in my grandpa's attic.
• Hey, check out this cool aetherophone I scored at the flea market!
• Her voice was like music through the aetherophone, reaching me from afar.