CAMERA FOR ENCODING AUDIO SIGNALS

A camera system is provided having an integral sound recording means for recording and outputting a permanent record of sound associated with a photograph wherein the sound is recorded with infrared ink. Also provided are means for reproducing the recorded sound and a photograph reader to decode sound and to play sound. Further provided is a method of decoding a pre-recorded audio signal printed as an array of invisible ink dots on the surface of a photograph coincident with an image printed on the surface of the photograph.