Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7299893 | Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources A loudspeaker horn (11) having a throat end (13) for receiving acoustic power from aligned acoustic power sources (41, 43, 45), an elongated throat (33), and a flared section (17) is provided with grating lobe mitigation fins (2... | 11/27/2007 |
| 7069219 | System and user interface for producing acoustic response predictions via a communications network A web hosted system and user interface in a client-server architecture permits audio designers to perform acoustic prediction calculations from a thin client computer. A client computer or other Internet connect device having a display screen is used by an audio pro... | 06/27/2006 |
| D523003 | Microphone | 06/13/2006 |
| D508691 | Microphone | 08/23/2005 |
| D505942 | Front of a loudspeaker | 06/07/2005 |
| 6081602 | Arrayable two-way loudspeaker system and method An arrayable loudspeaker system having a horn-loaded high frequency compression driver and a low frequency cone driver radiates acoustic energy from a focal point in a polar radiation pattern having amplitude and phase and includes a signal conditioning c... | 06/27/2000 |
| 5925856 | Loudspeaker horn A loudspeaker horn for use with an acoustical driver has a rectangular throat opening with a long dimension relative to the wavelength of the sound pressure waves generated within the high frequency range of the horn. A relatively short pre-load chamber c... | 07/20/1999 |
| 5821470 | Broadband acoustical transmitting system An acoustical transmitting system and method for producing a narrow beam of acoustic energy over a broadband operating frequency range utilizes a parabolic reflector dish, a horn-loaded compression driver for directing acoustic energy toward the dish's re... | 10/13/1998 |
| 5784474 | Method and circuit for improving the polar response of a two-way horn-loaded loudspeaker system A method and correction circuit for improving and controlling the listening window and response of a two-way loudspeaker system utilizing a horn-loaded high frequency driver. The correction circuit includes adjustable active all-pass and band-pass filters... | 07/21/1998 |
| 5602367 | Multiple tuned high power bass reflex speaker system A bass reflex loud speaker system for use in high power applications which includes an enclosure with at least two, and preferably three, cone drivers mounted in front of separate and acoustically isolated bass reflex chambers. Each bass reflex chamber is... | 02/11/1997 |
| 5377274 | Correction circuit and method for improving the transient behavior of a two-way loudspeaker system A circuit for improving the transient behavior of a two-way loudspeaker system includes a crossover circuit with high selectivity, amplitude and phase correction circuitry for separately correcting the amplitude and phase responses of the high and low fre... | 12/27/1994 |
| 5185801 | Correction circuit and method for improving the transient behavior of a two-way loudspeaker system A circuit for improving the transient behavior of a two-way loudspeaker system includes a crossover circuit with high selectivity, amplitude and phase correction circuitry for separately correcting the amplitude and phase responses of the high and low fre... | 02/09/1993 |
| 4968949 | Ohmically isolating input circuit An ohmically isolating input circuit accepts a three pin connector of a cable from a signal source output for virtually all three pin connector standards, and will output a signal of the same voltage regardless of which of the three pin connector standard... | 11/06/1990 |
