APPARATUS FOR GENERATING DIRECTIONAL SOUND AND MOBILE TERMINAL USING THE SAME
First Claim
1. An apparatus for generating directional sound, comprising:
- a signal controller for dividing and generating a reference signal into signals having three or more levels and phases;
a first signal processor and a second signal processor for controlling a first signal and a second signal having levels and phases canceling each other among the signals generated from the signal controller;
a central signal processor for controlling a signal having the same level and phase as the reference signal among the signals generated from the signal controller;
a first speaker array and a second speaker array for converting signals output from the first signal processor and the second signal processor into sound signals, and outputting the sound signals; and
a central speaker for converting a signal output from the central signal processor into a sound signal and outputting the sound signal, and arranged between the first speaker array and the second speaker array.
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Accused Products
Abstract
Provided are an apparatus for generating directional sound and a mobile terminal using the apparatus. The apparatus includes a signal controller for dividing and generating a reference signal into signals having three or more levels and phases, a first signal processor and a second signal processor for controlling a first signal and a second signal having levels and phases canceling each other among the signals generated from the signal controller, a central signal processor for controlling a signal having the same level and phase as the reference signal among the signals generated from the signal controller, a first speaker array and a second speaker array for converting signals output from the first signal processor and the second signal processor into sound signals and outputting the sound signals, and a central speaker for converting a signal output from the central signal processor into a sound signal and outputting the sound signal, and arranged between the first speaker array and the second speaker array.
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Citations
12 Claims
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1. An apparatus for generating directional sound, comprising:
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a signal controller for dividing and generating a reference signal into signals having three or more levels and phases; a first signal processor and a second signal processor for controlling a first signal and a second signal having levels and phases canceling each other among the signals generated from the signal controller; a central signal processor for controlling a signal having the same level and phase as the reference signal among the signals generated from the signal controller; a first speaker array and a second speaker array for converting signals output from the first signal processor and the second signal processor into sound signals, and outputting the sound signals; and a central speaker for converting a signal output from the central signal processor into a sound signal and outputting the sound signal, and arranged between the first speaker array and the second speaker array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile terminal, comprising:
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a speaker unit for generating a sound signal; a first speaker array having a plurality of speakers arranged in a left side of the speaker unit; and a second speaker array having a plurality of speakers arranged in a right side of the speaker unit, wherein sound signals output from the first speaker array and the second speaker array cancel each other out of a specific range. - View Dependent Claims (11, 12)
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Specification