51.  It should also respond to human voice commands or be controlled using a hand-held remote control device, or even by crews on the ground.

52.  It talks in a human voice, plugs itself into an outlet when it gets tired and has wireless access to just about any public network.

53.  Never to have spoken a normal word and never to have heard a human voice are terrible deprivations.

54.  No radios, just real, live human voices, singing.

55.  Normally speakers that size are able to produce only a narrow swath of sound in the middle of the frequency range, where human voice falls.

56.  One contraption had a microphone hooked up to a laptop computer, which recorded human voices and showed them as sound waves on a colored screen.

57.  Opera houses in particular were regarded as virtual temples where devotees of singing could worship the natural human voice.

58.  Other applications take digital data and turn it into analog outputs like music, video images or the sound of human voices.

59.  People can be manipulated by the destructive power of the human voice as well as by its creative power.

60.  Plants really do love music and respond to the human voice.