Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8184839 | One-size-fits-most hearing aid A hearing-aid device comprising a housing and circuitry module, wherein the circuitry module comprises a battery, a microphone, and a receiver, and the circuit module is inserted in the hearing aid housing. The hearing aid device further comprises a retractable batt... | 05/22/2012 |
| 8174234 | Magnetically coupled battery charging system Inductively coupled battery charging systems and methods are provided. Transmit circuitry can include a transmit coil operatively part of a transmit resonant circuit that exhibits resonance at a transmit resonant frequency and an unloaded Q value of at least about 2... | 05/08/2012 |
| 8174233 | Magnetically coupled battery charging system Inductively coupled battery charging systems and methods are provided. Transmit circuitry can include a transmit coil operatively part of a transmit resonant circuit that exhibits resonance at a transmit resonant frequency and an unloaded Q value of at least about 2... | 05/08/2012 |
| 8170250 | One-size-fits-most hearing aid A hearing-aid device comprising a housing and circuitry module, wherein the circuitry module comprises a battery, a microphone, and a receiver, and the circuit module is inserted in the hearing aid housing. The hearing aid device further comprises a retractable batt... | 05/01/2012 |
| 8160284 | Amplification circuit and hearing aid Certain embodiments of the present technology provide improved amplification circuits and hearing aids that can utilize such amplification circuits. In an embodiment, for example, an amplification circuit includes: a first sub circuit configured to create a voltage ... | 04/17/2012 |
| 8150057 | Companion microphone system and method Systems and methods for wireless communication can include a first unit configured to synchronously transmit a first digital audio packet redundantly in at least a first dedicated slot and a second dedicated slot over a time period, and a second unit configured to r... | 04/03/2012 |
| 8107665 | Insert earphone using a moving coil driver Certain embodiments of the invention may be found in an insert earphone assembly. The insert earphone assembly may comprise a housing and a transducer located in the housing. The transducer may be for converting electrical signals received into sound energy. The ins... | 01/31/2012 |
| 8091680 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same An acoustic resistor or damper and method of manufacturing the same is disclosed. The damper has mesh material and mounting material attached to the mesh material. The mounting material defines an open region for transmission of sound through the mesh material, and ... | 01/10/2012 |
| 8022775 | Systems and methods for maintaining a drive signal to a resonant circuit at a resonant frequency Systems and methods for maintaining a drive signal to a resonant circuit at a resonant frequency are provided. A system for maintaining a drive signal to a resonant circuit at a resonant frequency can include: an oscillator configured to provide an output to a phase... | 09/20/2011 |
| 8019386 | Companion microphone system and method A method and system for enhancing speech intelligibility using wireless communication in portable, battery-powered and entirely user-supportable devices. The devices may be talker devices and receiver devices, where the audio signals input into the talker devices ma... | 09/13/2011 |
| 7991179 | High fidelity noise-excluding earphones with ergonomically designed construction An insert high fidelity earphone is provided in which a hollow housing is connected to two tubes. A first tube is connected to the hollow housing on one side, and on the other side is inserted into an ear tip that ensures substantial sealing of the ear canal. A seco... | 08/02/2011 |
| 7913565 | Method and system for predicting long-term exposure to a hazardous environment Certain embodiments of the present invention provide a system and method for predicting long-term exposure to a hazardous environment based on a user-controllable measurement interval of short duration. In an embodiment, the system includes an electronic circuit for... | 03/29/2011 |
| 7881486 | Directional microphone assembly A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate having first and second spaced openings defining front and rear sound inlets, and a directional microphone cartridge enclosing a diaphragm. The diaphragm is oriented... | 02/01/2011 |
| 7837005 | Mushroom-shaped push-in foam eartip for use with high-fidelity insert earphones Certain embodiments of the invention may be found in a push-in eartip assembly. The push-in eartip assembly may include a mushroom-shaped foam tip. The push-in eartip assembly may also include a hollow tube extending through the center of the mushroom-shaped foam ti... | 11/23/2010 |
| 7836771 | Method and system for an ultra low power dosimeter Certain embodiments of the invention may be found in an ultra low power dosimeter assembly. The ultra low power dosimeter assembly may include a low power voltage source and a table circuit. The table circuit may be adapted to convert an input voltage to a second vo... | 11/23/2010 |
| 7836770 | Method and system for noise dosimeter with quick-check mode and earphone adapter A noise dosimeter with capability to rapidly predict noise exposure over an extended time period based on a measurement of short duration. Either an acoustic or an electrical earphone adapter provides a convenient means to connect the noise dosimeter to an external ... | 11/23/2010 |
| 7832080 | Directional microphone assembly A directional microphone assembly for a hearing aid, and methods of assembling a directional microphone, are provided. The hearing aid has one or more microphone cartridge(s), and first and second sound passages. Inlets to the sound passages, or the sound passages t... | 11/16/2010 |
| 7761091 | Method and system of managing volume and functionality control between an audio player and wireless earphones A method and system for providing low-noise, high-fidelity wireless Bluetooth earphones with control operation either at the earphone or the player that operate to control the volume and other functionality from either location in a seamless manner and provide probe... | 07/20/2010 |
| 7751579 | Acoustically transparent debris barrier for audio transducers The present invention relates to systems and methods for protecting acoustic devices. In particular embodiments, barriers are useful for preventing a variety of solid, liquid, and vapor contaminants from modifiying or damaging the performance of acoustic transducers... | 07/06/2010 |
| 7697705 | High fidelity digital hearing aid and methods of programming and operating same A programmable digital hearing aid circuit and method for operating and programming same are disclosed. The device provides a flexible means to compensate for undesirable frequency response distortion normally due to the electro-acoustical characteristics of the mic... | 04/13/2010 |
| 7590253 | Hearing aid having switchable first and second order directional responses A hearing aid apparatus is disclosed that employs both an omnidirectional microphone and at least one directional microphone of at least the first order. The electrical signals output from the directional microphone are supplied to an equalization amplifier which at... | 09/15/2009 |
| 7574007 | Stimulus analysis system and method having adaptive artifact rejection A stimulus analysis system and artifact rejection method are disclosed. The method may be used in many applications, such as, for example, DPOAE testing, TEOAE testing, BAER testing, ultrasound, MRI, RADAR, GPS, EEG, EKG, or communications. In one embodiment, a syst... | 08/11/2009 |
| 7555134 | Antenna for miniature wireless devices and improved wireless earphones supported entirely by the ear canal Wireless earphone systems provide earphones configured to be supported entirely by the ear canals of the wearer and to provide stereophonic reproduction of sound to the wearer based on a two-channel stereophonic signal from a transceiver that is attachable to a devi... | 06/30/2009 |
| 7551940 | Two-way voice communication device having external acoustic noise reduction A two-way voice communication device which provides a high-level of acoustic noise reduction is disclosed. A resilient ear tip provides acoustic isolation and secures the earphone within the ear canal of the user. The ability to rotate the earphone within the ear ca... | 06/23/2009 |
| 7522740 | Multi-coil coupling system for hearing aid applications A hearing improvement device using a multi-coil coupling system and methods for operating such a device are disclosed. An embodiment of the present invention may use an array microphone to provide highly directional reception. The received audio signal may be filter... | 04/21/2009 |
| RE40696 | High fidelity insert earphones and methods of making same An insert earphone is provided in which a piece of foam material is used to resiliently mount a receiver within a chamber portion of a one-piece plastic housing member. The receiver has an output port extending through a central aperture of the piece of foam materia... | 04/07/2009 |
| D589028 | Low profile microphone tip assembly | 03/24/2009 |
| 7460677 | Directional microphone array system A directional microphone array system generally for hearing aid applications is disclosed. The system may employ a broadside or an endfire array of microphones. In either case, the signals generated by the microphone are added using a plurality of summation points t... | 12/02/2008 |
| 7452337 | Hand-held hearing screener apparatus A hearing screener apparatus is disclosed and may include a housing and a testing probe operatively coupled to the housing. The testing probe may generate electrical signals based on otoacoustic emissions of the inner ear of a test subject, when the testing probe is... | 11/18/2008 |
| 7298858 | Insert earphone assembly for audiometric testing and method for making same An improved insert earphone for audiometric testing is provided, having a housing, a receiver located within the housing, a flexible eartip located externally to the housing, and a tube nipple acoustically coupled between the receiver and the flexible eartip. The fl... | 11/20/2007 |
| 7286677 | Directional microphone assembly A directional microphone assembly for a hearing aid is disclosed. The hearing aid has one or more microphone cartridge(s), and first and second sound passages. Inlets to the sound passages, or the sound passages themselves, are spaced apart such that the shortest di... | 10/23/2007 |
| 7269262 | Hearing test apparatus and method having automatic starting functionality A hearing test device and method are disclosed which involve the placement of a testing probe in the ear canal of a test subject. The device analyzes responses to stimuli applied to the ear canal to determine whether the testing probe has been properly placed in the... | 09/11/2007 |
| D550201 | Earphone | 09/04/2007 |
| D550200 | Earphone | 09/04/2007 |
| 7245728 | Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics A microphone assembly generally for hearing aid and communications applications is disclosed. The microphone assembly operates in both directional and non-directional or omni-directional modes. The microphone assembly has front and rear sound inlet tubes, and an act... | 07/17/2007 |
| D542773 | High fidelity noise excluding earphones with ergonomically designed construction | 05/15/2007 |
| 7206426 | Multi-coil coupling system for hearing aid applications Disclosed herein is a hearing improvement device using a multi-coil coupling system and methods for operating such a device. In an embodiment according to the present invention an array microphone may be used to provide highly directional reception. The received aud... | 04/17/2007 |
| D535644 | High-fidelity noise-excluding earphones with ergonomically designed construction | 01/23/2007 |
| 7162041 | Noise canceling microphone with acoustically tuned ports Certain embodiments of a noise canceling microphone with acoustically tuned ports are disclosed herein. In one aspect of the invention, the noise canceling microphone may comprise a housing, a transducer for converting received energy received into electrical signal... | 01/09/2007 |
| D533869 | Microphone tip assembly | 12/19/2006 |
