Patent ID: 7248705

Claim:
A battery operated headphone set comprising: a pair of headphone assemblies each for engagement over one ear of a user, each headphone assembly having means for passively excluding sound from reaching the user in the form of a cushion connected to each headphone assembly for pressing against the user and over the ears of the user; an active noise reduction circuit mounted in at least one of the headphone assemblies for actively reducing noise generated outside the headphone set from reaching the user, the active noise reduction circuit including means for sensing noise that is outside the headphone set, generating a compensating sound to the noise and supplying the compensating sound to the user for canceling at least some of the noise; a sound conditioning circuit mounted in at least one of the headphone assemblies for storing a plurality of different prerecorded repetitious conditioning sounds for being supplied to the user, the sound conditioning circuit including means for storing a plurality of different prerecorded repetitious conditioning sounds for being supplied to the user one at a time; an external sound source amplifier mounted in at least one of the headphone assemblies for connection to an external source of sound for supplying sound from the external source of sound to the user; a battery powered power supply for powering each of the active noise reduction circuit, the sound conditioning circuit, and the external sound source amplifier; switching means for selecting between a first mode of operation for supplying no sound to the user with no active noise reduction, a second mode of operation for supplying no sound to the user with active noise reduction; a third mode of operation for supplying one conditioning sound to the user with active noise reduction and a fourth mode of operation for supplying sound from the external sound source to the user with active noise reduction; and a band connected between the headphone assemblies for holding the headphone assemblies over the ears of the user; wherein each headphone assembly includes a housing, the switching means comprising an on-off switch that is accessible via a first side opening in said housing, for powering the active noise reduction circuit, the sound conditioning circuit and the external sound source amplifier, a push button switch that is accessible via a second side opening in said housing, for selected each of the conditioning sounds in sequence for the third mode of operation and a mode with no conditioning sound, a roll switch that is accessible via an edge slot in said housing, for selecting a volume for the conditioning sounds and for sound from the external sound source, and a jack switch in said housing for selecting the fourth mode when an external sound source is connected to the external sound source amplifier by a jack engaged to the jack switch.