premise: Telephone contains a sampled voice of an operator.
hypothesis: Telephone . A telephone converts sound , typically and most efficiently the human voice , into electronic signals suitable for transmission via cables or other transmission media over long distances , and replays such signals simultaneously in audible form to its user . In 1876 , Scottish emigrant Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice . The essential elements of a telephone are a microphone ( transmitter ) to speak into and an earphone ( receiver ) which reproduces the voice in a distant location . Although originally designed for simple voice communications , convergence has enabled most modern cell phones to have many additional capabilities . Telephone (song) . Musically , `` Telephone '' consists of an expanded bridge , verse-rap and a sampled voice of an operator announcing that the phone line is unreachable .