Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| D634848 | Hearing aid | 03/22/2011 |
| 7903827 | Hearing aid programming interface with configuration on demand In accordance with the present invention the hearing aid programmer includes a program memory for receiving firmware programming instructions and a parameter memory for receiving patient-specific hearing aid parameters to be programmed into a coupled programmable he... | 03/08/2011 |
| 6748089 | Switch responsive to an audio cue The present invention provides a switch method and apparatus that is switchable among a plurality of operational modes by attenuating an input audio signal detected by the apparatus. The apparatus includes a microphone which converts the input audio signal to an inp... | 06/08/2004 |
| 7362875 | Balloon-expandable hearing device fitting system and self-expanding hearing device A self-expanding hearing device is disclosed. The device includes a body, a membrane coupled to the body, and a frame coupled to the body, so that a user can compress the frame for insertion into the user's ear canal, and when the user releases compression the frame... | 04/22/2008 |
| 7274794 | Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in single wave sound environment A sound processing system including at least one microphone, an audio processor, and at least one output device. The audio processor includes an analog beamformer, a microphone equalizer, and an apparent incidence processor. Two different embodiments of the apparent... | 09/25/2007 |
| 7020297 | Subband acoustic feedback cancellation in hearing aids A new subband feedback cancellation scheme is proposed, capable of providing additional stable gain without introducing audible artifacts. The subband feedback cancellation scheme employs a cascade of two narrow-band filters Ai(Z) and Bi(Z) alo... | 03/28/2006 |
| 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 canal. Unlike conventional active noise cancellation systems, active noise... | 10/05/2004 |
| 6757395 | Noise reduction apparatus and method A multi-band spectral subtraction scheme is proposed, comprising a multi-band filter architecture, noise and signal power detection, and gain function for noise reduction. In one embodiment, the gain function for noise reduction consists of a gain scale function and... | 06/29/2004 |
| 6717537 | Method and apparatus for minimizing latency in digital signal processing systems A method and an apparatus for minimizing latency in digital signal processing paths. One example is an active noise cancellation device. The system includes a digital closed feedback loop having a forward path and a feedback path. The forward path includes a compens... | 04/06/2004 |
