IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0006921
(2008-01-07)
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등록번호 |
US-8620003
(2013-12-31)
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발명자
/ 주소 |
- Vincent, Stephen Saint
- Katz, Robert
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
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The invention converts non audio systems into distributed audio sources for active noise control solutions. The system transforms non acoustic structures into soundboards using inertial type acoustic transducers. Acoustic parameters unique for each application due to the variation in properties of t
The invention converts non audio systems into distributed audio sources for active noise control solutions. The system transforms non acoustic structures into soundboards using inertial type acoustic transducers. Acoustic parameters unique for each application due to the variation in properties of the sound board are compensated by equalizers. The invention also uses damping means to limit the reflection of bending waves from the edges. The inertial type acoustic transducer is driven by an amplifier. The acoustic signal to the amplifier is modified by a signal conditioner to compensate for the non optimal response of the acoustic system. An external controller communicates with the amplifier to control its operating parameters. A series of distributed audio sources in a variety of positions may each be addressable as a node on a network wherein noise detected at that source is analyzed and the system generates sound at that source to mask the noise.
대표청구항
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1. An audio system, comprising: a. an input acoustic signal and an acoustic momentum transducer coupled to a means to amplify;b. a means for processing a sound signal;c. a body comprising any geometry coupled to said acoustic momentum transducer wherein said body radiates acoustic energy when driven
1. An audio system, comprising: a. an input acoustic signal and an acoustic momentum transducer coupled to a means to amplify;b. a means for processing a sound signal;c. a body comprising any geometry coupled to said acoustic momentum transducer wherein said body radiates acoustic energy when driven by said acoustic momentum transducer wherein said acoustic momentum transducer is associated at any position on said body; andd. a digital signal processor for measuring said system response and pre distorting the input acoustic signal to optimize frequency distortion of sound generated by the body. 2. The audio system of claim 1, wherein said body comprises a surface selected from the group consisting of gypsum panel walls, gypsum ceilings, gypsum columns, architectural wood, glass and metal paneling and said means for processing comprises a digital signal processor. 3. The audio system of claim 2, wherein the body further comprises a planer surface. 4. The audio system of claim 2, wherein the body comprises a surface curved in either one or more directions. 5. The audio system of claim 2 further comprising a visco-elastic damper, and a constrained layer damper to reduce the reflected bending wave from said body. 6. The audio system of claim 2, wherein said body further comprises a visco-elastic damper to reduce the reflected bending wave from said body. 7. The audio system of claim 1, wherein said body comprises any surface on any element selected from the group consisting of tables, workstations, workstation partitions, acoustic panels, and finished case goods. 8. The audio system of claim 1, wherein the body comprises an elevated floor. 9. The audio system of claim 1, wherein said body comprises at least one glass window. 10. The audio system of claim 1, wherein the body comprises consolidated organic and inorganic fiber. 11. The audio system of claim 1, wherein said body comprises at least one surface selected from the group consisting of composite structures of organic and inorganic fibers bound within an organic and composite structures of organic and inorganic fibers bound in an inorganic matrix. 12. The audio system of claim 1, wherein said body comprises at least one panel having a structural core. 13. The audio system of claim 1, wherein said body comprises a surface and a visco-elastic damper to reduce the reflected bending wave from said body. 14. The audio system of claim 1, wherein said body comprises a surface and a constrained layer damper to reduce the reflected bending wave from said body. 15. The audio system of claim 1 further comprising means for detecting sound. 16. The audio system of claim 15, wherein said means for detecting sound comprise a microphone input. 17. The audio system of claim 16, further comprising a microphone phantom power supply. 18. The audio system of claim 17 further comprising a signal conditioner and a pre amplifier. 19. The audio system of claim 15, wherein said means for detecting sound comprise an accelerometer. 20. The audio system of claim 1 further comprising a psycho acoustic bass extension. 21. The audio system of claim 20, said means for processing a sound signal comprises a digital signal processor and said switch is integrated therewith. 22. The audio system of claim 1 further comprising a switch, wherein said input acoustic signal is passed through said switch. 23. The audio system of claim 1 further comprising a plurality of system parameters, wherein said means for processing a sound signal of said parameters comprises a nonvolatile memory for storing said plurality of system parameters. 24. The audio system of claim 1 further comprising means to adapt system response. 25. The audio system of claim 24, wherein said means to adapt system response comprise a parametric equalizer. 26. The audio system of claim 25, wherein said parametric equalizer employs automated frequency analysis and adaptation algorithms. 27. The audio system of claim 26 further comprising means for detecting sound for system response detection. 28. The audio system of claim 27, wherein said means for detecting sound comprise a microphone. 29. The audio system of claim 27 further comprising an accelerometer for system response detection. 30. The audio system of claim 24, wherein said means to adapt system response comprise a graphic equalizer. 31. The audio system of claim 30, wherein said graphic equalizer utilizes automated Real Time Analysis to adapt overall system response. 32. The audio system of claim 24, wherein said means to adapt system response comprise an equalizer employing an inverse Fourier Transform filter. 33. The audio system of claim 24 further comprising a microphone for detecting sound and for system response detection. 34. The audio system of claim 24 further comprising an accelerometer for detecting sound and for system response detection 36. 35. The audio system of claim 1 further comprising an active acoustic source. 36. The audio system of claim 35, wherein the active acoustic source provides foreground music. 37. The audio system of claim 36, wherein the active acoustic source provides background music. 38. The audio system of claim 37, wherein the active acoustic source provides noise masking. 39. The audio system of claim 38, wherein said noise masking comprises white noise. 40. The audio system of claim 38, wherein said noise masking comprises speech processed to create babble. 41. The audio system of claim 38, wherein said noise masking comprises filtered white noise. 42. The audio system of claim 1, wherein said input acoustic signal comprises analog format. 43. The audio system of claim 1, wherein said input acoustic signal comprises digital format. 44. The audio system of claim 1, wherein said system provides a multi-zone distributed audio system and further comprises a plurality of zones. 45. The audio system of claim 44, wherein said multi-zone audio system provides distribution of a common audio signal to each of said plurality of zones. 46. The audio system of claim 44, wherein said multi-zone system provides distribution of a unique audio signal to each of said plurality of zones. 47. The audio system of claim 44, wherein each of said plurality of zones comprises means for detecting sound. 48. The audio system of claim 47, wherein said means for detecting sound comprises a microphone. 49. The audio system of claim 47, wherein said means for detecting sound comprises an accelerometer. 50. The audio system of claim 1 further comprising a plurality of zones and means to identify said input acoustic signal. 51. The audio system of claim 50 further comprising a masking generator wherein said means to identify said signal identifies said signal and causes said generator to generate a masking signal. 52. The audio system of claim 51, wherein said means to identify said input acoustic signal monitors a plurality of input acoustic signals and causes said generator to generate a masking signal appropriate for said plurality of zones. 53. The audio system of claim 52, wherein said means to identify comprises a controller. 54. The audio system of claim 51, wherein said means to identify said input acoustic signal monitors a plurality of input acoustic signals and causes said generator to generate a specific and appropriate masking signal for each of said plurality of zones. 55. An audio system comprising: an acoustic momentum transducer in acoustic association with a body wherein said acoustic momentum transducer is associated at any position on said body and said body comprises any geometry; anda digital signal processor for measuring said system response and pre distorting an input acoustic signal to optimize frequency distortion of sound generated by the body.
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