converting sound to electrical impulses receiving transmitted electrical signals changing electrical impulses into sound sending electrical signals through a circuit
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following best describes the function of an encoder in a telephone communication system?
Possibilities:
- converting sound to electrical impulses
- receiving transmitted electrical signals
- changing electrical impulses into sound
- sending electrical signals through a circuit

converting sound to electrical impulses