👉 A dictaphone is a device used for transmitting voice signals over long distances, typically in the form of a microphone and speaker. It can be used to transmit audio messages between people who are separated by physical distance or to facilitate communication between remote locations. The basic principle of a dictaphone is that it converts sound waves into electrical signals, which are then transmitted via wires or cables to a receiver, typically located in the recipient's room. The term "dictaphone" was coined and popular