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| Number | Title | Issue Date |
| 8090114 | Convertible filter Apparatus and method for implementing a convertible filter in differing ones of its delay and weighting elements are powered through different power conductors, thereby enabling the convertible filter to be dynamically configured to be operable as different types of... | 01/03/2012 |
| 8085946 | ANR analysis side-chain data support An ANR circuit, possibly of a personal ANR device and possibly within an ADC of the ANR circuit, feedback reference data, feedforward reference data and/or pass-through audio data is provided to a secondary downsampling (and/or decimating) filter and/or is provided ... | 12/27/2011 |
| 8081769 | Apparatus for rectifying resonance in the outer-ear canals and method of rectifying According to one embodiment, an apparatus for cancelling resonance in an outer-ear canal, comprises an outer-ear canal model includes attenuator modules representing reflection coefficients of an earphone or headphone and an eardrum, and a delay module having a dela... | 12/20/2011 |
| 8073151 | Dynamically configurable ANR filter block topology In an ANR circuit, possibly of a personal ANR device, each of a feedback ANR pathway in which feedback anti-noise sounds are generated from feedback reference sounds, a feedforward ANR pathway in which feedforward anti-noise sounds are generated from feedforward ref... | 12/06/2011 |
| 8073150 | Dynamically configurable ANR signal processing topology In an ANR circuit, possibly of a personal ANR device, each of a feedback ANR pathway in which feedback anti-noise sounds are generated from feedback reference sounds, a feedforward ANR pathway in which feedforward anti-noise sounds are generated from feedforward ref... | 12/06/2011 |
| 8045726 | Noise-cancelling headphone A noise-cancelling headphone includes a cancel signal generator that receives ambient noise via an electro-acoustic transducer and generates and outputs a cancel signal eliminating the noise and a speaker unit that outputs an audio signal and a cancel signal, and co... | 10/25/2011 |
| 7986791 | Method and system for automatically muting headphones The illustrative embodiments provide a method and system for automatically muting a headphone. The headphone detects a sound external to the headphone. A volume threshold and a frequency threshold are received, wherein the volume threshold and the frequency threshol... | 07/26/2011 |
| 7499555 | Personal communication method and apparatus with acoustic stray field cancellation Personal communication method and apparatus, such as telephone handsets and headsets, with acoustic stray field cancellation are disclosed. The personal communications device employs an echo canceling receiver generally including two displacement sources that are no... | 03/03/2009 |
| 7489785 | Noise cancellation system and headphone therefor A noise cancellation system includes a headphone having a sound transducer and a headphone speaker. Noise cancellation circuitry is provided remote from the headphone and supplies the headphone speaker and is supplied from the sound transducer. A filter normalizes t... | 02/10/2009 |
| 7474754 | Method for canceling unwanted loudspeaker signals In a method for canceling unwanted signals from at least one external sound source, such as a loudspeaker, by means of headphones provided with microphones, at least known sound signals from the at least one external sound source are compensated by anti-phase sound ... | 01/06/2009 |
| 7373182 | Wireless mobile phone including a headset A wireless mobile phone is provided with an input-output interface and an output interface. The input-output interface may be employed singularly to facilitate removable attachment of a telephony headset to the phone to receive at least telephony audio signals from ... | 05/13/2008 |
| 7367422 | System and method for providing passive noise reduction A passive noise reduction apparatus has a headset with at least one ear cup attached to the headset, the ear cup having an ear side and a shell side. An inner shell, having a cup side and an outer side, is mounted to and substantially covers the shell side of the ea... | 05/06/2008 |
| 7366662 | Separation of target acoustic signals in a multi-transducer arrangement The present invention provides a process for separating a good quality information signal from a noisy acoustic environment. The separation process uses a set of at least two spaced-apart transducers to capture noise and information components. The transducer signal... | 04/29/2008 |
| 7359520 | Directional audio signal processing using an oversampled filterbank A directional signal processing system for beamforming information signals. The system includes an oversampled filterbank, which has an analysis filterbank for transforming the information signals in time domain into channel signals in transform domain, a synthesis ... | 04/15/2008 |
| 7359573 | Contrast compensation apparatus and method thereof A contrast compensation apparatus and a method thereof utilize a simplified hardware structure and a low contrast distortion. The contrast compensation apparatus includes a pixel value detection unit to detect a distribution of pixel values of respective pixels of a... | 04/15/2008 |
| 7355364 | Motor and controller inversion: commanding torque to position-controlled robots Systems and methods are presented that cancel the dynamics of a motor and a joint controller in the presence of communication time delays, measurement noise, and controller parameter uncertainties inherent in a robot system. A cancellation system includes feedback o... | 04/08/2008 |
| 7352871 | Apparatus for communication and reconnaissance coupled with protection of the auditory system A method and apparatus are disclosed for listening to ambient sounds, engage in face-to-face communication, listen to and transmit voice communications, while also protecting the auditory system from hazardous sound pressure levels. Increased gain permits the user t... | 04/01/2008 |
| 7327850 | Supplying electrical power A power supply includes a battery source supplying power and a voltage converter circuit. The voltage converter circuit converts the power to the input voltage supplied to other circuitry. The voltage converter circuit varies the input voltage in response to a load ... | 02/05/2008 |
| 7318654 | Headset incorporating an integral light A headset with a light incorporated within is disclosed. A representative embodiment of the invention may be construed as an aviation-style headset that includes a first earcup and a second earcup each comprising active noise reduction (ANR) circuitry, a headband in... | 01/15/2008 |
| 7317801 | Active acoustic noise reduction system An active acoustic noise reduction system which comprises a single input transducer and an output actuator that are physically located next to each other in the same location. In one embodiment, the input transducer and the output actuator are a hybrid represented b... | 01/08/2008 |
| 7317906 | AM radio receiver An AM radio receiver comprises an RF amplifier, a first mixer that converts the RF signal to a first intermediate-frequency signal, a first bandpass filter that band-limits the first intermediate-frequency signal, a second mixer that converts the output from the fir... | 01/08/2008 |
| 7317802 | Active-noise-reduction headsets with front-cavity venting Active-noise-reduction (ANR) headsets protect the hearing of their users from loud persistent noises, such as airplane engines and construction equipment. These headsets generally include ear speakers and special circuitry to cancel or suppress certain types of loud... | 01/08/2008 |
| 7286860 | Systems and methods for a comfortable wireless communication device An improved wireless communication device, method, and system, that is easy to operate for people of all ages, particularly for senior citizens, that is compact, ergonomic, and comfortable, but which also provides simplicity of operation for those users who do not r... | 10/23/2007 |
| 7283850 | Method and apparatus for multi-sensory speech enhancement on a mobile device A mobile device includes an air conduction microphone and an alternative sensor that provides an alternative sensor signal indicative of speech. A communication interface permits the mobile device to communicate directly with other mobile devices. ... | 10/16/2007 |
| 7266209 | Cochlear implants with a stimulus in the human ultrasonic range and method for stimulating a cochlea A cochlear implant system for a patient's cochlea includes an external processor and an implanted internal unit. The internal unit includes one electrode for inserting in the patient's cochlea, and an internal coil for driving the electrode. The external processor i... | 09/04/2007 |
| 7251335 | Self contained MP3 player and earphones A headset containing 2 earphones is described. The headset includes an anti-noise circuit, a radio system circuit, and a sound collection circuit for providing an anti-noise capability. One of the earphones defines a cavity having an external input terminal therein.... | 07/31/2007 |
| 7248704 | Active sound attenuation device to be arranged inside a duct, particularly for the sound insulation of a ventilating and/or air conditioning system The device for the active sound attenuation of a sound signal propagated in a duct comprises: at least first sensor means for a first sound signal, attenuation actuating means supplying an active sound attenuation signal in response to a selected control signal, an ... | 07/24/2007 |
| 7248705 | Noise reducing headphones with sound conditioning A headphone set has a pair of headphone assemblies for engagement over the ears, each with a cushion and an active noise reduction circuit for reducing noise. A sound conditioning circuit stores various conditioning sounds for the user and an external sound source a... | 07/24/2007 |
| 7248713 | Integrated automatic telephone switch A hearing aid includes a microphone for providing an electrical signal representative of a received acoustic signal, a means for filtering the electrical signal and a means for automatic switching. Upon detecting a presence of a magnetic field, the means for automat... | 07/24/2007 |
| 7245726 | Noise canceling microphone system and method for designing the same A microphone housing improves the broadband noise canceling performance of an active noise canceling microphone system while also ensuring improved speech transmission through the system. First and second microphone elements are selected each having a diameter “dâ... | 07/17/2007 |
| 7227957 | Noise-suppressing receiver A noise-suppressing receiver is provided. A noise pick-up and a receiver are fixed within a cylinder-like body. An insulation layer is set between the noise pick-up and the receiver. The insulation layer divides the cylinder-like body into a receiver module and a no... | 06/05/2007 |
| 7227959 | Multi-channel digital feedback reducer system The present invention provides method and apparatus that improve processing of acoustic signals by reducing acoustic feedback in an acoustic system. An aspect of the invention is a multi-channel digital feedback reducer (DFR) system that comprises a plurality of cha... | 06/05/2007 |
| 7214179 | Low acceleration sensitivity microphone An implanted microphone is provided that has reduced sensitivity to vibration and attendant acceleration forces. In this regard, the microphone differentiates between the desirable and undesirable components of a transcutaneously received signal. More specifically, ... | 05/08/2007 |
| 7215766 | Headset with auxiliary input jack(s) for cell phone and/or other devices Headsets are used in variety of applications to facilitate one- or two-way audio communications between users and/or devices. The present inventor recognized that conventional headsets lack means for successfully integrating more than one audio source, despite their... | 05/08/2007 |
| 7203326 | Noise suppressing apparatus In an apparatus which estimates characteristics of a surrounding noise only when an input signal is soundless and performs a noise reduction or suppression of the input signal based on the estimated result, a signal noise ratio is estimated from the input signal, an... | 04/10/2007 |
| 7191127 | System and method for speech enhancement A method and apparatus for reducing noise in a speech signal. A handset or remote unit provides to users with a hearing deficiency, a first mode of operation where noise suppressant/speech enhancement algorithms are used during any auditory-related service. There is... | 03/13/2007 |
| 7177433 | Method of improving the audibility of sound from a loudspeaker located close to an ear A method and apparatus for improving the audibility of sound from a loudspeaker located close to an ear, comprises the steps of detecting ambient acoustic noise arriving from other sound sources using a transducer that provides corresponding ambient sound signals, i... | 02/13/2007 |
| 7177805 | Simplified noise suppression circuit A system for reducing noise in an acoustical signal comprises a sampler (104) for obtaining discrete samples of the acoustical signal, an analog to digital converter (106), and a noise suppression circuit (108). The noise suppression circuit ( | 02/13/2007 |
| 7171698 | Earmuff having anatomically correct ear cups An earmuff having anatomically correct ear cups, which are axially rotatable to ensure a proper fit over a person's ears and laterally rotatable when the earmuff is disposed in a storage position around the person's neck. ... | 02/06/2007 |
| 7158643 | Auto-calibrating surround system A multi-channel surround sound system and method is described that allows automatic and independent calibration and adjustment of the frequency, amplitude and time response of each channel of the surround sound system. The disclosed auto-calibrating surround sound (... | 01/02/2007 |
