Patent application number | Description | Published |
20090003616 | HEADPHONING - A noise reducing headset has one or more of the following features: (a) pair of earcups each seated in a yoke assembly mechanically coupled by a headband enclosing a flat spring formed with a slot that runs the length of the spring accommodating electrical wires electrically interconnecting electrical elements in the earcups, (b) each earcup having active noise reducing circuitry, (c) each earcup including a loudspeaker driver located off center in the earcup to allow an internal cavity inside each earcup to accommodate a loudspeaker driver, a microphone and an electronic printed circuit board and one of a battery and plug assembly, (d) one of the earcups accommodating a detachably secured plug assembly having a sensitivity switch covered by the earcup when the plug assembly is fully seated in the earcup, (e) the other earcup having a battery door that may be opened to allow insertion and removal of the battery and covered by a yoke assembly when the headset is worn by a user with the battery fully seated in the earcup. | 01-01-2009 |
20100027803 | SUPRA-AURAL HEADPHONE NOISE REDUCING - An earphone for a supra-aural noise reducing headphone, with a front cavity that includes a foam portion and an open passageway. The foam portion supplements the volumetric dimension of the passageway to improve passive attenuation. | 02-04-2010 |
20100128884 | High Transmission Loss Headphone Cushion - A headset including an earcup having a front opening adapted to be adjacent to the ear of the user, a baffle disposed within the earcup to define front and rear cavities, a cushion extending around the periphery of the front opening of the earcup and constructed and arranged to accommodate the ear of the user, the cushion having a first density, an inner radial portion, and an outer radial portion opposite the inner radial portion, a cushion cover substantially surrounding the cushion to form a headphone cushion assembly, and a high impedance component having a second density and located near the outer radial portion to increase the transmission loss of the cushion along a radial direction. | 05-27-2010 |
20110044464 | FEEDFORWARD ANR DEVICE ACOUSTICS - An earpiece of an ANR device incorporates one or more of feedforward-based ANR; feedback-based ANR; passive noise reduction (PNR) of environmental noise sounds in the environment external to the casing of the earpiece in higher audible frequencies; a controlled leak acoustically coupling the front cavity to the environment external to the casing of the ANR device where the coupling may be through another cavity that is closable to the environment external to the casing with a leaky cover; a combination of an acoustically resistive port and a mass port coupling a rear cavity to the environment external to the casing where the coupling may be through another cavity that is closable to the environment external to the casing with a leaky cover; a feedforward microphone given acoustic access to the environment external to the casing through an aperture that is overlain with a leaky cover or that is enclosed within a cavity that is acoustically coupled to the environment external to the casing with a leak. | 02-24-2011 |
20110211723 | EARPHONE CUSHIONS - A cushion includes a first material and a second material and is formed into a first region and a second region. The first region defines an exterior surface shaped to fit the concha of a human ear. The second region defines an exterior surface shaped to fit the ear canal of a human ear. The first and second regions together define an interior surface shaped to couple the cushion to acoustic elements of an earphone. The first material occupies a first volume adjacent to the interior surface. The second material occupies a second volume between the first material and the first and second outer surfaces. The first and second materials are of different hardnesses. | 09-01-2011 |
20110216909 | High Transmission Loss Cushion - A headset including an earcup having a front opening adapted to be adjacent to the ear of a user, the earcup extending in a radial direction and an axial direction and defining an earcup volume; and a bellows cushion extending around the periphery of the front opening of the earcup and sized to engage the ear of the user, the bellows cushion comprising a plurality of folded segments located at an outer radial portion of the bellows cushion, and configured to be substantially compliant along an axial direction. | 09-08-2011 |
20110311071 | Electronic Interfacing with a Head-Mounted Device - Power is delivered from a power source in a head-mounted device to a separate accessory that is coupled to the head-mounted device. Power and signals are delivered on a common conductor that couples the head-mounted device to an accessory. One or both of the head-mounted device and the accessory are configured based on the signals. Power may be received at an accessory from the head-mounted device through a dedicated power conductor. Power may be delivered from a power source in a portable accessory to a head-mounted device that is coupled to the portable accessory and uses the power for circuitry in the head-mounted device that delivers audio to a user. | 12-22-2011 |
20130129106 | Adjusting Noise Reduction in Headphones - A headset includes first and second earcups each having a front opening adapted to be adjacent to a respective ear of a user and including an electroacoustic transducer, a headband coupled to each of the earcups, and an active noise reduction circuit coupled to the electroacoustic transducers. The headband is configurable between at least two configurations that each press the earcups against the head of the user with different amounts of force. The active noise reduction circuit is configured to determine which of the at least two configurations the headband may be configured in, to provide a different amount of noise reduction when the headband may be configured in each of the different amounts of force, and to automatically transition between the different amounts of noise reduction in response to a change in the configuration of the headband between the at least two configurations. | 05-23-2013 |
20140079274 | EARPHONES - An earphone includes a first acoustic chamber having a reactive element and a resistive element in a parallel configuration, a second acoustic chamber separated from the first acoustic chamber by an acoustic transducer and including a unitary port to provide both pressure equalization of the second chamber and equalization of the earphone to a predetermined frequency response, and a housing to support the apparatus from the concha of a wearer's ear and to extend the second acoustic chamber into the ear canal of the wearer's ear. | 03-20-2014 |
20140126734 | Providing Ambient Naturalness in ANR Headphones - In an active noise reducing headphone, a signal processor applies filters and control gains of both the feed-forward and feedback active noise cancellation signal paths. The signal processor is configured to apply first feed-forward filters to the feed-forward signal path and apply first feedback filters to the feedback signal path during a first operating mode providing effective cancellation of ambient sound, and to apply second feed-forward filters to the feed-forward signal path during a second operating mode providing active hear-through of ambient sounds with ambient naturalness. | 05-08-2014 |
20140241562 | EARPHONES - A headphone includes an acoustic transducer having a sound-radiating surface that moves along a first axis, a housing enclosing the acoustic transducer, a first acoustic chamber defined by a first side of the acoustic transducer and a first portion of the housing, the first acoustic chamber including a first reactive port in a serial configuration with an acoustic resistance to couple the first acoustic chamber with space outside the headphone, a second acoustic chamber defined by a second side of the acoustic transducer and a second portion of the housing, the second acoustic chamber separated from the first acoustic chamber by the acoustic transducer, and an opening coupling the second acoustic chamber to the wearer's ear canal along a second axis that is not parallel to the first axis. | 08-28-2014 |
20140294222 | HEADSET PORTING - A headset includes at least one ear cup having front and rear cavities separated by a driver. The cup includes a pressure equalization port coupling the front cavity to space outside the cup, the pressure equalization port having a cross-sectional area greater than 2 mm | 10-02-2014 |
20140294223 | Headset Porting - A headset cup having a front cavity and a rear cavity separated by a driver, with a mass port tube connected to the rear port to present a reactive acoustic impedance to the rear cavity, in parallel with a resistive port, the total acoustic response of the rear cavity remaining linear at high power levels. In some embodiments, the mass port tube is made of metal, while the headset cup is otherwise made of plastic. | 10-02-2014 |