Voice signals are sound waves produced by the human voice when we speak or make sounds. These signals are created by the vibration of the vocal cords in the larynx, which is located in the throat. The shape and movement of the mouth, tongue, and lips further modify these sounds, allowing us to form words and convey meaning. In communication technology, voice signals can be transmitted over various mediums, such as telephone lines or the internet. Devices like microphones capture these signals, converting them into electrical signals for processing. This technology enables voice communication in applications like VoIP and teleconferencing.