Class 381/309 - Stereo earphone

Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter in which the transducers are intended to
No. of patents: 197
Last issue date: 03/27/2012

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Number	Title	Issue Date
5333206	Dual element headphone A dual element headphone, including a first acoustic transducer mounted within a first housing so as to direct sound in a certain direction out of the first housing. The first housing is sized small enough so as to at least partially fit into the cavum co...	07/26/1994
5329592	Headband for removably securing stereo earphones A combination headband and stereo earphones having two elongated strips of material releasably attached to each other. The ends of the strips can be attached to form a headband. The wires attached to each earphone are placed in the headband and maintained...	07/12/1994
5327178	Stereo speakers mounted on head In combination with support structure attachable to an upper portion of the user's head, the improvement comprising a first loudspeaker carried by the support structure in offset, proximate relation to the ear opening of one of the user's ears, the loudsp...	07/05/1994
5272757	Multi-dimensional reproduction system A multi-dimensional sound reproduction system is provided for receiving a binaural or other appropriately produced recording on left and right channels and outputting the recording to localized speakers (58) and (60). The localized speakers (58) and (60) ...	12/21/1993
5265165	Multipurpose headwear Headwear that produces sound from a signal is provided by an audio device in addition to the normal features of the headwear. The audio headwear of the present invention may be configured as a visor, goggles or a headband. In a preferred embodiment, the p...	11/23/1993
5247293	Signal reproducing apparatus A signal reproducing apparatus operating on a wireless basis and having a status signal multiplexed with audio signals and transmitted to a receiver containing a display, the status signal indicating the current operating status of a recording medium play...	09/21/1993
5201003	High fidelity stereophonic reproduction system A personal stereo sound system device, of no larger than hand size for carrying and using on the person of at least one individual listener, has a miniaturized playback program source with control of program selection, a stereo amplifier, a volume adjuste...	04/06/1993
5175768	Method and apparatus for enhancing the stereo effect in headsets having cross coupling voice coils Apparatus for providing cross coupling of information on two channels in a two channel transducer. The apparatus preferably comprises a first housing having a first transducer adapted to convert an electrical signal on a first of the channels to sound, a ...	12/29/1992
5164987	Personal stereo speaker assembly A personal stereo speaker assembly adapted to be supported by the temple pieces of eyeglasses worn by the user includes a pair of sleeves adapted to receive respective temple pieces therein. Secured to and depending from each sleeve so as to at least part...	11/17/1992
5146501	Altitude-sensitive portable stereo sound set for dancers A portable stereo sound set adapted to be worn by a dancer who listens to dance music through left and right earphones mounted on his head and connected to the binaural amplifier channels of the set. Included in each channel is an amplitude-control stage ...	09/08/1992
5095382	Wireless headphone A wireless headphone in which an infra-red light signal transmitted from a transmitting apparatus is received and reproduced as an audible sound by a headphone unit portion. A first light receiving element is provided on a top portion of a head band porti...	03/10/1992
5001774	Stereo headphone remote control circuit A remote control circuit for remotely controlling a power source and a volume of a main set from a stereo-headphone composed of a remote control transmitting circuit arranged in a headphone, and a remote control receiving circuit arranged in a mainset....	03/19/1991
4965836	Stereo headphone A headphone having a dual element speaker unit including a face plate having an opening generally centrally located therein. A case coupler is mounted in the opening, and has an annular projection protruding through the opening. A first dynamic transducer...	10/23/1990
4961227	Portable loud speaker system A portable speaker having a speaker housing which vibrates in harmony with the audible sounds generated by the speaker. The speaker includes a loud speaker housing having a surface capable of vibrating and a speaker cone which vibrates within said housing...	10/02/1990
4888805	Stereo head headphones bracket system Each transducer of a pair of stereo headphones is mounted on a respective eyeglass temple using socket receivers mounted on the respective transducer and the respective temple, and joining them with a piece of semirigid wire having on each end thereof a p...	12/19/1989
4864619	Stereo headset-headband assemblies for headphones A stereo headset-headband construction for headphones is provided of soft flexible resilient circular headband structure including a fashionable waterproof and breathable fabric having an insulating material encased therein providing thermal protection an...	09/05/1989
4829571	Headphone A stereo headphone having left and right headphone units which are connected to a binaural input plug that has left and right input cords respectively connected between the left and right headphone units and wherein the right and left input cords are conn...	05/09/1989
4821323	Stereo headphone A stereo headphone has a generally "U"-shaped head band provided with a pair of head band support rails at opposite ends thereof. End portions of the head band are received for sliding extension and retraction withing the support rails. A speaker support ...	04/11/1989
4809811	Ear pad construction for earphones An ear pad for earphones comprises a foam-like material formed into a pad enclosing the user's ear in use in order to expand the essentially linear frequency response of a good earphone so that it brings also the lowest still audible frequencies into the ...	03/07/1989
4803728	Stereo mixing jack An adapter for interfacing between the output of a stereophonic sound source and a standard headphone set to suppress either the lead vocal and instrumental sound signals or in a second embodiment to suppress the left channel of a reproduced sound recordi...	02/07/1989
4783814	Stethoscope having pseudostereophonic binaural enhancement A stethoscope having a monophonic electrical sensor which feeds electrical signals corresponding to heart sounds to a transversal filter to produce pseudostereophonic signals at split outputs which may be used to power dual earphones for binaural listenin...	11/08/1988
4748669	Stereo enhancement system A stereo enhancement system (300) is disclosed which provides an enhanced wider stereo image and a wider listening area, and further provides perspective correction for achieving correct stereo sound perspective with speakers at different locations and wi...	05/31/1988
4633498	Infrared headphones for the hearing impaired An infrared headphone with supplemental microphones to aid the hearing impaired allowing the user to hear the significant sounds from the ambient surroundings. In order to suppress the sound intensity of the user's own voice the invention provides for mic...	12/30/1986
4499593	Modular stereo headphones Replaceable snap-together wires, headphones, headband and plug comprise a modular stereo headphone apparatus. Sealed headphones are provided with walled receptacles to receive mating removable clips secured to the ends of connecting wires. Each clip is mo...	02/12/1985
4455677	Multipurpose headphone assembly A multipurpose electronic assembly for a headphone assembly used in connection with a stereophonic system, such system comprising detection and signal means to ascertain noises extraneous to the stereophonic output system. Such assembly comprises a pick-u...	06/19/1984
4433209	Stereo/monaural selecting circuit The present invention is directed to a stereo/monaural selecting circuit having a jack for supplying therefrom for reproduction a stereophonic sound signal output or a monaural sound signal output to apparatus connected thereto, or for receiving for recor...	02/21/1984
4412106	High fidelity stereophonic reproduction system An audio system for portable high fidelity reproduction, to provide a sensation of being surrounded by a three-dimensional field of lifelike sound events, comprises a set of miniaturized electro-acoustical devices adapted to each other and for battery-ope...	10/25/1983
4404434	Collapsible stereophone A stereophone includes a headband which supports cup assemblies at each of its ends. The cup assemblies can be pivoted to a transport position in which they are enclosed within the headband. The ends of the headband may be fastened together to retain the ...	09/13/1983
4347405	Sound reproducing systems utilizing acoustic processing unit A system for reproducing a plurality of electro-acoustic signals each corresponding, for example, to a channel signal of a multichannel electronic keyboard instrument, includes an acoustic processing unit which comprises a plurality of electro-acoustic tr...	08/31/1982
4277654	Stethoscopic headphone set A stethoscopic headphone set comprising two identical arms each provided with an earphone, Which arms terminate in a hinged connecting element including a wire spring. The connecting element essentially comprises two mirror-symmetrical identical coupling ...	07/07/1981
4245136	Monitor ampliphones An improved quadraphonic headphone arrangement in which a first audio signal is coupled to a speaker in each headphone and a second audio signal, usually monaural, is coupled to an amplifier and then to a second speaker in each headphone. Switching means ...	01/13/1981
4219789	Stereo headphone adapter An adapter is provided which permits the use of a stereo headset with a monaural radio receiver. The adapter is in the form in a self-contained unit having a plug and a jack, the plug being insertable in the jack of the radio receiver while the jack accom...	08/26/1980
4088849	Headphone unit incorporating microphones for binaural recording A headphone having a pair of microphone-loudspeaker units interconnected by a clamping strap for holding the units against the ears of a wearer. The loudspeaker and a microphone of each unit are isolated acoustically from each other by an enclosure. The e...	05/09/1978
4087629	Binaural sound reproducing system with acoustic reverberation unit A binaural sound reproducing system for transmitting sound radiated from an electro-acoustic transducer through a sound wave transmission path such as a pipe to the left and right ears of a listener includes an acoustic reverberation unit comprising a mec...	05/02/1978
3985960	Stereophonic sound reproduction with acoustically matched receiver units effecting flat frequency response at a listener's eardrums A binaural sound recording and reproduction system which utilizes a recording mannequin equipped with an electroacoustic model of the human auditory tract to thereby record the sound pressure which would be incident on a listener's eardrum and also utiliz...	10/12/1976
3984885	4-Channel headphones A structure of four-channel headphones having sound insulating means between front and rear channel driver units, and tone control means only for the front channel tones, said sound insulating means being formed of foam material which transmits low-pitche...	10/12/1976
3984636	Quadraphonic headphone with ambience programmer A quadraphonic headphone including an ambience control circuit which is contained within a hand sized case which is connected to the audio transducers in each headphone cup and which may be connected to a source of quadraphonic program material. The contr...	10/05/1976

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Class 381/309 - Stereo earphone