Abstract:
본 발명은 어레이 스피커를 통한 음장 제어 방법 및 장치에 관한 것으로, 본 발명에 따른 음장 제어 방법은 어레이 스피커를 통해 방사되는 소리의 전달을 억제하려는 억제 영역과 소리의 전달을 강조하려는 강조 영역에서의 음압비와 강조 영역에서의 음압 효율을 고려하여 입력 신호의 음압을 제어하는 필터의 계수를 산출하고, 산출된 필터의 계수에 따라 입력 신호를 여과함으로써 강조 영역으로 소리를 포커싱하는 복수 개의 출력 신호들을 생성하며, 생성된 복수 개의 출력 신호들을 출력함으로써, 특정 청취자에게만 소리를 집중시키기 위해 이어폰이나 헤드셋을 착용하는 불편함없이 어레이 스피커로부터 특정 방향 및 거리에 위치한 청취자가 해당 소리를 명료하게 인지하는 것이 가능하다. 어레이 스피커, 음장 제어, 음압비, 음압 효율, 포커싱
Abstract:
PURPOSE: An apparatus for detecting and isolating a target material, and a method for detecting and isolating the target material using the same are provided to efficiently detect and isolate a small amount of the target material in a sample. CONSTITUTION: An apparatus for detecting and isolating a target material comprises a target material binding part(100), a signal generation part(200), a first separation part(300), and a second separation part(400). The target material binding part specifically binds with a target material. The signal generator is connected to the target material binding part and generates a detectable signal. The first separation part is connected to the signal generation part. The second separation part is fixed at a solid support(500) and specifically binds to the first separation part. The first and second separation parts have a cleavage site when binding each other.
Abstract:
PURPOSE: An apparatus and method of controlling spatial sound energy distribution are provided to improve a sound pressure level in a specific region by performing filtering using a filter factor. CONSTITUTION: A receiving unit(110) receives an input signal including a sound source. A control region setting unit(120) sets a control region including a reduction region and a central region. A filter factor calculation unit(130) calculates filter factors in consideration of sound energy efficiency in the central region and the sound energy rate between the reduction region and the central region. A signal generation unit(140) generates a plurality of output signals centering sound energy transmission on the central region by filtering an input signal according to the filter factors calculated in the filter factor calculation unit. An array size determination unit(150) sets a speaker radiating the output signal from array speakers. An output unit(160) outputs the plurality of output signals generated from the signal generation unit based on a speaker array size determined from the array size determination unit.
Abstract:
PURPOSE: A short distance and long distance sound field simultaneous control apparatus and method are provided to execute a focusing process by distinguishing and controlling a short distance field and a long distance field. CONSTITUTION: A filter generating unit(310) creates a filter which controls sound pressure reduction according to distance in a second dark zone region. A short distance region setting unit(311) establishes a short distance region based on the location of a listener. A region distinction unit(313) distinguishes the short distance region into the location of the listener and a first dark zone region around the location of the listener. A filter processing unit(320) creates a multi channel signal by calculating the filter value of a filter and an input signal. An output unit outputs the multi channel signal.
Abstract:
PURPOSE: An apparatus and a method for generating a directional sound are provided to suppress ununiform frequency properties due to a reflection sound using a beam pattern changing based on time. CONSTITUTION: A beam pattern generating unit(110) generates a beam pattern changing based on time. An operation unit(120) convolutes the generated beam pattern with an inputted sound signal. The operation unit generates the convoluted sound signal by a multi channel signal. A speaker array(130) outputs the multi channel signal. The beam pattern generating unit generates a beam pattern with an attenuation ratio different according to a distance. The beam pattern generating unit generates a beam pattern with the same sound pressure.
Abstract:
PURPOSE: An apparatus for focusing the sound of an array-speaker system and a method thereof are provided to enhance the focusing performance of the array-speaker system by reflecting an error caused by the array-speaker system in the design of a filter. CONSTITUTION: A filter value which is corrected by the information of an acoustic properties is applied to a focusing filter(1010). The focusing filter outputs an input signal to include a pre-set acoustic radiation pattern. In a compensating filter(1020), an input signal is replicated by the number of output channels. The compensating filter, through an arrayed speaker(1030), compensates for a deviation in gain and a delay between each channel signal that occurs in each different channel signal before being outputted. The focusing filter is generated by using the filter value calculated based on a transfer function, which is corrected using the extracted information on acoustic properties.