Sound direction system
First Claim
1. A sound source system for directing sound, comprising:
- a first plane and a second plane of sound sources, where at least one of the sound sources lies in a reference plane that is normal to a vector where a sound lobe from the first and second planes is aimed; and
an audio signal source coupled to a delay element that delays an audio signal to a sound source in the first plane or the second plane proportional to a delay distance between the reference plane and the sound source.
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Accused Products
Abstract
This invention provides a sound source system capable of producing a desired coverage pattern with high SPL that may be steered towards a desired listening area. The sound source system may provide an array of sound sources where the coverage pattern and SPL may depend on the height, width, and depth of the assembled array. Adding height and width to the array may narrow the vertical and horizontal coverage patterns that are projected, respectively. To maintain a substantially constant coverage pattern, a frequency shading techniques may be used to keep the height of the array constant relative to the wavelength. Adding depth to the array may provide greater SPL with minimal effect on the coverage pattern because array'"'"'s height and width have not changed. The sound source system may also coherently sum in the main lobe and provide substantial off-axis rejection. This may be done using an end-fired related principle where each sound source in the array may be delayed proportional to its delay distance. The delay distance for each sound source may be the shortest distance between the sound source and the reference plane. This allows the sound source system to provide a desired coverage pattern with a desired SPL.
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Citations
70 Claims
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1. A sound source system for directing sound, comprising:
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a first plane and a second plane of sound sources, where at least one of the sound sources lies in a reference plane that is normal to a vector where a sound lobe from the first and second planes is aimed; and
an audio signal source coupled to a delay element that delays an audio signal to a sound source in the first plane or the second plane proportional to a delay distance between the reference plane and the sound source. - View Dependent Claims (2, 3, 4)
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5. A sound source system for directing sound, comprising:
an array of sound sources forming a first plane and a second plane, where each sound source is positioned relative to a reference plane that is substantially normal to a vector for a sound lobe that is generated from the array of sound sources, where each sound source that has a delay distance between the sound source and the reference plane is coupled to a delay element that delays an audio signal to the sound source proportional to its delay distance to the reference plane. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49)
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37. A sound source system, comprising:
a sound source element having two sound sources enclosed by a base forming a cavity between the two sound sources, where electromagnetic motors for the two sound sources face out.
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45. A sound source system, comprising:
a sound source element having two sound sources enclosed by a base forming two cavities between the two sound sources and the base having a divider wall, where electromagnetic motors for the two sound sources face out.
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50. A sound source system, comprising:
a sound source enclosed in a box having a port, where a magnetic motor for the sound source is within the box. - View Dependent Claims (51, 52, 53, 54)
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55. A method for directing sound, comprising:
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grouping a plurality of sound sources into a first plane and a second plane of sound sources, where each sound source is positioned relative to a reference plane that is substantially normal to a vector for a sound lobe that is generated from the plurality of sound sources; and
delaying an audio signal to each sound source that has a delay distance between the sound source and the reference plane proportional to its delay distance to the reference plane. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A method for directing sound, comprising:
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defining a vector for a sound lobe and a reference plane that is normal to the vector;
grouping a plurality of means for emitting sound into a first plane and a second plane;
coupling a common signal source that provides audio signals to each means for emitting sound;
delaying audio signals to each means for emitting sound that has a delay distance between the each means for emitting sound and the reference plane proportional to its delay distance to the reference plane.
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66. A system for directing sound, the system comprising:
a plurality of means for emitting sound arranged in a array in a plane, the array having an extent along a desired lobe, where each means for emitting sound comprises a pair of cones facing each other on a common axis. - View Dependent Claims (67, 69)
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68. A system for directing sound, the system comprising:
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a first plurality of means for emitting sound arranged in a left array in a first plane, the left array having an extent along a desired lobe; and
a second plurality of means for emitting sound arranged in a right array in a second plane, the right array having an extent along the desired lobe, where each means for emitting sound of the first plurality is arranged on a respective common axis with a means for emitting sound of the second plurality.
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70. A system for directing sound, the system comprising:
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a first plurality of means for emitting sound arranged in a first array in a first plane, the first array having an extent along a desired lobe;
a second plurality of means for emitting sound arranged in a second array in a second plane, the second array having an extent along the desired lobe;
where;
each means for emitting sound comprises a cone and a sound source; and
each means for emitting sound further comprises a cavity bounded in part by the respective cone, the cavity comprising walls at an angle of between 20° and
60°
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Specification