Method and apparatus for simultaneously controlling near sound field and far sound field
First Claim
1. An apparatus for simultaneously controlling a near sound field and a far sound field, the apparatus comprising:
- a filter generating unit to generate a filter to simultaneously control the near sound field and the far sound field based on a ratio of a sound pressure energy at a location of a listener to a sound pressure energy obtained by summing sound pressure energies of a first dark zone and a second dark zone;
a filter processing unit to generate a multi-channel signal by processing a filter value of the generated filter and an input signal; and
an output unit to output the multi-channel signal.
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Abstract
An apparatus and method for forming a Personal Sound Zone (PSZ) at a location of a listener are provided. An apparatus for simultaneously controlling a near sound field and a far sound field may classify the near sound field and the far sound field based on a distance between an array speaker and a listener, and may control the near sound field and the far sound field and thus, it is possible to perform focusing even when the listener is located in adjacent to the array speaker. Additionally, the apparatus may generate a directive sound source using the array speaker, and at the same time, may reduce a sound pressure in a far field, thereby reducing a sound source spreading to the far field while focusing is performed at the location of the listener.
57 Citations
21 Claims
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1. An apparatus for simultaneously controlling a near sound field and a far sound field, the apparatus comprising:
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a filter generating unit to generate a filter to simultaneously control the near sound field and the far sound field based on a ratio of a sound pressure energy at a location of a listener to a sound pressure energy obtained by summing sound pressure energies of a first dark zone and a second dark zone; a filter processing unit to generate a multi-channel signal by processing a filter value of the generated filter and an input signal; and an output unit to output the multi-channel signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for simultaneously controlling a near sound field and a far sound field, the method comprising:
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generating a filter to simultaneously control the near sound field and the far sound field based on a ratio of a sound pressure energy at a location of the listener to a sound pressure energy obtained by summing sound pressure energies of a first dark zone and a second dark zone; generating, by way of a processor, a multi-channel signal by processing a filter value of the generated filter and an input signal; and outputting the multi-channel signal. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification