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-up microphone in one or more speaker assembly for such ambient sound pick-up. The pick-up microphone is connected to an automatically actuated switch which closes whenever the pick-up microphone detects certain ambient sounds extraneous to the sy...

The present invention provides a headphone with cord winder devices that are capable of winding up a bridging cord between one (left) headphone assembly and the other (right) headphone assembly. The headphone comprises one (left) headphone assembly accommodating, in one (left) headphone housing corresponding to one of the left and right ear, a speaker and a cord winder device for winding up an input cord for connecting to audio-video equipment; and the other (right) headphone assembly accommodat...

A headphone sound system apparatus includes headphones and a sound system having an output line for the headphones for producing audio signals to the headphones. The sound recognition and interrupt system has the sound system output coupled thereto and to the headphones and has a housing which can be attached to the person, such as being clipped to a belt. The housing has a microphone mounted inside for picking up sounds extraneous to the sound system and a switching circuit mounted in the housi...

A headphone based compact disk player is designed to be worn on a user's head in normal fashion and to play a compact disk received within the device through speakers located within the device. The headphone based compact disk player has a first housing having a first speaker therein and a second housing also having a second speaker therein. A bridge connects the two housings. A playing mechanism receives the compact disk through an opening on the first housing and plays the audio track recorded...

The invention relates to a low-radiation headphone with right and left acoustic irradiation housings corresponding to the ears of the user, with each of the housings having an acoustic baffle (10") comprising MU-metal and accommodating dynamic audio transducers. The acoustic baffle (10") is formed in a manner permeable to sound in front of the audio transducers, and has a radiation dissipation zone (20) pointing at the temples of the user. The zone (20) dissipating radiation is provided through ...

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 accommodates the plug of a stereo headset. A transformer is connected between the plug and the jack of the adapter and the jack includes interconnected spaced contacts to provide a monaural signal to both channels of the stereo headset.

The headphone includes a cup-shaped case forming the coupling space and this cup-shaped case, in use, engages the user's head and encloses the user's ear. At least one electroacoustic transducer is included in the cup-shaped case, and the case either is designed as an acoustic frictional resistance or as a supporting structure of such a resistance. The headphone is equipped with acoustic and/or electrical systems compensating the drop at the low frequencies, and there are no reflecting surfaces ...

A stereophone includes cup assemblies which are supported over the ears of a user by a headband. Each cup assembly includes a piezoelectric acoustic transducer and a dynamic acoustic transducer. The reproduction of the entire audio spectrum is divided between the two transducers at a crossover frequency which is established by an acoustic filter.

Apparatus for reducing pressure inside a headphone includes a port between front and back cavities. Preferably there is a resistive element and a high compliance diaphragm.

An active noise reducing headset has a high compliance diaphragm. Structure limits the maximum excursion of the diaphragm so that the voice coil does not escape the air gap. Structure, such as indentations in the diaphragm, prevent unrecoverable diaphragm collapse.