Sound-emitting device
First Claim
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1. A method for dispersing a first group of people in a human population from a fixed location and preventing the first group of people from loitering in the fixed location, comprising:
- mounting a sound-emitting device to a permanent structure at the fixed location, said sound-emitting device including oscillating means for generating a signal and sounding means for generating and emitting sound in accordance with said signal;
wherein the sound generated and emitted by said sounding means of said sound-emitting device consists essentially of sound waves in a predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHx, said predetermined frequency band of the sound waves being audible to said first group of people in the human population and substantially inaudible to a second group of people in the human population, whereby said sound emitted by said sounding means of said sound-emitting device operates to disperse said first group of people from said fixed location and to prevent said first group of people from loitering in said fixed location.
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Abstract
A sound-emitting device (10, FIG. 1) may be mounted to a wall near places which will be unsuitable for the congregation of young person, such as outside shops and on street corners. The device generates sound waves at a frequency that is detectable by one or more subgroups of individuals within a group of individuals.
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Citations
35 Claims
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1. A method for dispersing a first group of people in a human population from a fixed location and preventing the first group of people from loitering in the fixed location, comprising:
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mounting a sound-emitting device to a permanent structure at the fixed location, said sound-emitting device including oscillating means for generating a signal and sounding means for generating and emitting sound in accordance with said signal; wherein the sound generated and emitted by said sounding means of said sound-emitting device consists essentially of sound waves in a predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHx, said predetermined frequency band of the sound waves being audible to said first group of people in the human population and substantially inaudible to a second group of people in the human population, whereby said sound emitted by said sounding means of said sound-emitting device operates to disperse said first group of people from said fixed location and to prevent said first group of people from loitering in said fixed location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for dispersing a first group of people in a human population from a location, comprising:
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providing a sound-emitting device having oscillating means for generating a signal and sounding means for generating and emitting sound in accordance with said signal; wherein the sound generated emitted by said sounding means of said sound-emitting device consists essentially of sound waves in a predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHx, said predetermined frequency band of the sound waves being audible to said first group of people, substantially inaudible to a second group of people in the population and operating to disperse said first group of people from said location. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A sound-emitting device, comprising:
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oscillating means for generating a signal; and sounding means for generating sound in accordance with said signal, said sound consisting essentially of sound waves in a predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHz, said predetermined frequency band of the sound waves being audible to a first group of people in a human population and substantially inaudible to a second group of people in the human population, the second group of people older than the first group of people, wherein said sound operates to disperse said first group of people away from said sound-emitting device. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method for dispersing a first group of people in a human population from a location, comprising:
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providing a sound-emitting device at the location, the sound-emitting device having signal generating means for generating an electrical signal and sounding means for generating and emitting sound in accordance with said electrical signal; wherein said electrical signal has a first frequency component and a second frequency component, said first frequency component within a first predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHz, and said second frequency component in a second predetermined frequency band between 1 Hz and 10 Hz; and wherein said sound emitted by said sounding means comprises sound waves in said first predetermined frequency band that are modulated at one or more low frequencies within said second predetermined frequency band, wherein said modulated sound waves are audible to the first group of people in the human population and are substantially inaudible to a second group of people in the human population, the second group of people older than the first group of people, whereby the modulated sound waves operate to disperse the first group of people away from the location. - View Dependent Claims (31, 32)
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33. A sound-emitting device, comprising:
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signal generating means for generating an electrical signal; and sounding means for generating and emitting sound in accordance with said electrical signal; wherein said electrical signal has a first frequency component and a second frequency component, said first frequency component within a first predetermined frequency band that is no more than 2 kHz in width and encompasses 16.5 kHz, and said second frequency component in a second predetermined frequency band between 1 Hz and 10 Hz; and wherein said sound emitted by said sounding means comprises sound waves in said first predetermined frequency band that are modulated at one or more low frequencies within said second predetermined frequency band, wherein said modulated sound waves are audible to a first group of people in a human population and are substantially inaudible to a second group of people in the human population, the second group of people older than the first group of people, wherein the modulated sound waves operate to disperse said first group of people away from said sound-emitting device. - View Dependent Claims (34, 35)
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Specification