Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 5475759 | Electronic filters, hearing aids and methods An electronic filter for an electroacoustic system. The system has a microphone for generating an electrical output from external sounds and an electrically driven transducer for emitting sound. Some of the sound emitted by the transducer returns to the m... | 12/12/1995 |
| 5412735 | Adaptive noise reduction circuit for a sound reproduction system A noise reduction circuit for a hearing aid having an adaptive filter for producing a signal which estimates the noise components present in an input signal. The circuit includes a second filter for receiving the noise-estimating signal and modifying it a... | 05/02/1995 |
| 5225836 | Electronic filters, repeated signal charge conversion apparatus, hearing aids and methods An electronic filter for filtering an electrical signal. Signal processing circuitry therein includes a logarithmic filter having a series of filter stages with inputs and outputs in cascade and respective circuits associated with the filter stages for st... | 07/06/1993 |
| 5111419 | Electronic filters, signal conversion apparatus, hearing aids and methods An electronic filter for filtering an electrical signal. Signal processing circuitry therein includes a logarithmic filter having a series of filter stages with inputs and outputs in cascade and respective circuits as GOVERNMENT SUPPORT This invention was made... | 05/05/1992 |
| 5016280 | Electronic filters, hearing aids and methods An electronic filter for an electroacoustic system. The system has a microphone for generating an electrical output from external sounds and an electrically driven transducer for emitting sound. Some of the sound emitted by the transducer returns to the m... | 05/14/1991 |
| 4820059 | Speech processing apparatus and methods Speech processing apparatus and methods utilizing a circuit for electronically deriving from speech over time a series of coordinate values representing positions of points on a path in a mathematical space which path positions represent the speech. An el... | 04/11/1989 |
| 4813076 | Speech processing apparatus and methods Speech processing apparatus including a memory for holding prestored information indicative of different phonetic representations corresponding to respective sets of addresses in the memory. Circuitry in the apparatus electrically derives a series of coor... | 03/14/1989 |
| 4809332 | Speech processing apparatus and methods for processing burst-friction sounds Speech processing apparatus including an electronic memory and circuitry that derives from speech sets of digital values representative of frequency spectra. The spectra have peaks at frequencies associated therewith. The peaks include a highest magnitude... | 02/28/1989 |
| 4548082 | Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods A hearing aid including a microphone for generating an electrical output from sounds external to a user of the hearing aid, an electrically driven receiver for emitting sound into the ear of the user of the hearing aid, and circuitry for driving the recei... | 10/22/1985 |
