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Document Title |
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7616769 |
Variable and shiftable acoustic output signal limiter
Systems and methods for variably and/or shiftably limiting signal output are disclosed. The system may include an attenuation circuit having an attenuation network activated by a source signal...
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7512243 |
Hearing protection earplug with a movable attenuation button, method for manufacturing the same and use of the same
The invention relates to a hearing protection earplug comprising a shell ( 12 ) for being worn at least in part in the ear canal of a user, the shell having a sound passage ( 1016, 1036 ) extending...
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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...
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7418103 |
System and method for controlling states of a device
A system and method for automatically changing a state of a device coupled to a headphone device is provided. The system comprises a means for detecting if at least one earpiece of the headphone...
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7401519 |
System for monitoring exposure to impulse noise
In one embodiment, a system for monitoring exposure to impulse noise includes a sound-sensing device, such as a microphone or other type of pressure transducer, operable to sense impulse noise, and...
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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...
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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...
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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...
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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...
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7308106 |
System and method for optimized active controller design in an ANR system
A tailored active noise control design method is presented that provides for improved noise attenuation performance for each individual user and improved hearing protection in a specified noise...
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7289636 |
Electronic earplug for monitoring and reducing wideband noise at the tympanic membrane
An electronic earplug for wideband control of pressures at the tympanic membrane is presented. A unique methodology of determining effective component placement inside an earplug that provides...
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7248706 |
Audio-signal detecting device
An audio-signal detecting device to be disposed in a user's earmuffs for protecting his eardrums against noise of high-decibel level is comprised of a receiving unit, a first audio-signal...
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7231037 |
Active audio compressing in telecommunication
An output reducing system for a telephone system, e.g., implemented in a headset, includes an input line and an output line, wherein the input line transmits an incoming signal to an output...
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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...
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7151835 |
Personal noise monitoring apparatus and method
The present invention relates to a method, system and device for monitoring noise received by individuals operating in noisy environments. The device comprises a substantially credit card size...
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7110551 |
Adaptive personal active noise reduction system
An improved active noise reduction system which has a transducer, an electro-acoustic sensing means including adjacent to the transducer, an attenuation means with electro-acoustic sensing means to...
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7103188 |
Variable gain active noise cancelling system with improved residual noise sensing
An active noise cancellation system includes a series of features for more effective cancellation, greater reliability, and improved stability. A particular feature adapted for headset systems...
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7054450 |
Method and system for ensuring audio safety
The invention concerns a method ( 200 ) and a system ( 100 ) for ensuring audio safety in an audio device ( 110 ). The system includes a processor ( 112 ), a sensor ( 116 ), an analog safety...
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7039195 |
Ear terminal
Ear terminal comprising a sealing section ( 2 ) for arrangement in the meatus ( 3 ) of a human, comprising:
an inner microphone (M 2 ) having a sound inlet (S 2 ) for being directed,...
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7006650 |
Device for attenuating sound on the human ear
A device for attenuating sound on the human ear, especially for preventing sleep disturbances caused by noise and other sounds. The device for attenuating sound has good damping properties and also...
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7003123 |
Volume regulating and monitoring system
A volume controlling system and method for regulating the output volume of a headset in order to protect the hearing ability of a user. The system includes a volume sensor/controller for monitoring...
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6961436 |
Noise-protecting arrangement for ear protector
A noise-protecting arrangement for ear protector includes an audio-frequency receiving unit, a first audio-frequency amplifying unit, a volume control amplifying unit, a current amplifying unit, a...
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6898290 |
Adaptive personal active noise reduction system
An improved personal noise attenuation system which attenuates both tonal and broadband sound and which includes a spatially adjustable acousto-electric sensor and attenuation means including both...
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6831984 |
Noise reducing
A module adapted for use in a noise reduction headset earcup has an enclosure having walls separating an interior of the enclosure from an exterior of the enclosure outside the earcup. There is a...
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6826287 |
Earmuff with controlled leak
An acoustic earmuff device is provided comprising a rigid cup, including inner and outer surfaces, a sound channel means disposed through said cup shaped portion, and a plate means operatively...
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6801629 |
Protective hearing devices with multi-band automatic amplitude control and active noise attenuation
A noise attenuating system includes a core portion adapted to actively filter sound waves into various bands, passing only those bands corresponding to safe amplitude sounds to a wearer's ear...
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6768803 |
Method and apparatus for selective acoustic signal filtering
The present invention relates to a method and apparatus for performing selective acoustic signal filtering. The apparatus comprises two acoustic ports, an electrical output port and an acoustic...
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6661901 |
Ear terminal with microphone for natural voice rendition
Ear terminal and ear terminal system, in which at least one ear terminal includes a sealing section ( 2 ) arranged for use in the ear meatus ( 3 ) of a human, including an inner microphone (M 2 )...
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6625277 |
Low current signal compression circuit
A low voltage and low current compression circuit for connection between a telephone receiver and a telephone headset earphone, the circuit having an operational amplifier with variable gain, the...
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6567524 |
Noise protection verification device
Ear protecting device with a sealing section for acoustically sealing the meatus of a human, includes a sound generator with a sound outlet for being directed toward the user meatus; an inner...
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6463316 |
Delay based active noise cancellation for magnetic resonance imaging
System and method for actively canceling the acoustic noise generated by changes in the electric current within the gradient coils of a magnetic resonance imager based on the finding that the...
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6449806 |
Head strap for headphones or hearing protector
A head strap for a set of headphones or hearing protector s with two ear members comprises two almost parallel wire arcs ( 18, 19 ) for connecting the two ear members. The two wire arcs ( 18, 19 )...
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6442279 |
Acoustic conditioner
An acoustic conditioning apparatus. The mechanism includes an attenuator to limit excessive noise levels. The attenuator includes a circuit for compressing an output sound pressure level below a...
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6278786 |
Active noise cancellation aircraft headset system
An active noise cancellation aircraft headset system. A speaker is mounted within each earcup of a headset for receiving and acoustically transducing a composite noise cancellation signal. A...
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6122383 |
Device for reducing noise
A device is provided for reducing noise in the human ear having a microphone which picks up the noise and a reproduction transducer to which a noise compensation signal is fed via a compensation...
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6118878 |
Variable gain active noise canceling system with improved residual noise sensing
An active noise cancellation system includes a series of features for more effective cancellation, greater reliability, and improved stability. A particular feature adapted for headset systems...
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6091825 |
Sound baffling device
A sound baffling device comprising an enclosure containing a homogeneous means for attenuating sound, the shape and composition of said enclosure crafted to vary the sound baffling characteristics...
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6078672 |
Adaptive personal active noise system
An improved personal noise attenuation system which attenuates both tonal and broadband sound and which includes a spatially adjustable acousto-electric sensor and attenuation means including both...
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6058194 |
Sound-capture and listening system for head equipment in noisy environment
The system of the invention includes a sound-capture and listening system for a helmet in a noisy environment, and is characterized in that it includes, on the sound-capture side, at least one...
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6041126 |
Noise cancellation system
A noise controlled type handset processes the output of non-directional noise detector installed outside of the handset by a first adaptive filter, delivers a control sound from a control speaker,...
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6035047 |
System to block unwanted sound waves and alert while sleeping
A cordless, wireless headset to block unwanted sound waves and/or noise from entering the ears of a user. The headset (FIG. 5) contains an electronic receiver, an audible tone/alert generator,...
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5987144 |
Personal active noise cancellation method and device having invariant impulse response
A selected electrical signal is first applied to the input of a source (30) to determine at least the impulse response (H), over a predetermined time, between the source output and the input of...
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5970795 |
Apparatus and method for testing attenuation of in-use insert hearing protectors
The system is designed for the purpose of providing a means of conducting objective assessment of the actual or "real world" attenuation which is provided by insert-type hearing protection (IHP)...
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5970155 |
Headset for hearing protectors
The invention relates to a headset (1) for a hearing protector provided with a padding part (12) having an essentially elliptical ear opening (18). The headset comprises a microphone (2), an...
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5815582 |
Active plus selective headset
An active plus selective headset system for provision of active attenuation of broadband noise as well as speech filtering comprising a headset with reference microphones, residual microphones and...
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5748752 |
Adaptive voice enhancing system
A transducer/transmitter captures not only the acoustic signal in the voice band, as in the prior art, but also an acoustic signal that includes audio signals outside the voice band; preferably...
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5745581 |
Tracking filter for periodic signals
A method for designing a frequency periodic filter with a frequency response which has a periodic bandwidth including designing a first sampled data filter whose response corresponds to a set...
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5740258 |
Active noise supressors and methods for use in the ear canal
A noise suppressor includes an input transducer and an output transducer adapted to be located in an ear canal. A housing is provided to support the transducers in the ear canal, and the housing...
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5692056 |
Method and apparatus for intracranial noise suppression
A method and apparatus for active cancellation of vibrational noise produced by a medical instrument in the head of a patient. Vibrations from the instrument, as well as vibrations in the bone...
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5675658 |
Active noise reduction headset
An active noise reduction headset including a headband and at least one earcup secured thereto. A microphone is mounted within the earcup for detecting and transducing acoustic pressure within the...
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