Abstract:
A noise cancelation apparatus for headphones using an independent component analysis adaptive filter includes; an external microphone installed at an outside of the headphones and to receive an external noise; a feedforward adaptive filter using independent component analysis which receives a noise signal output from the external microphone to perform the convolution for an adaptive filter coefficient using the noise signal as a reference signal for generating an attenuation signal; a subtracter which subtracts the attenuation signal from a target signal provided from the outside; and an error microphone installed inside the headphones. An output signal is outputted through a speaker of the headphones. The adaptive filter coefficient is learned by receiving an error signal from the error microphone to minimize a component which is not correlated to each other between the target signal and the noise signal.
Abstract:
시선 경로 제공장치가 개시된다. 본 시선 경로 제공장치는, 이격된 위치에서 촬영된 복수의 이미지 및 이격된 위치에서 청취된 복수의 음원을 입력받는 입력부, 복수의 음원을 분석하여 음원의 위치를 판단하는 위치 판단부, 복수의 이미지 각각에 대한 복수의 모노 돌출맵을 생성하고, 생성된 복수의 모노 돌출맵을 이용하여 동적 돌출맵을 생성하는 돌출맵 생성부, 생성된 동적 돌출맵 및 판단된 음원 위치를 기초로 복수의 이미지에 대한 시선 경로를 생성하는 시선 경로 생성부, 및, 생성된 시선 경로를 출력하는 출력부를 포함한다.
Abstract:
PURPOSE: A method for removing an interested sound source and a method for recognizing a voice are provided to estimate a mixed noise signal effectively, by removing the interested sound source from a mixed signal provided through two microphones installed in an acoustic signal mixed environment. CONSTITUTION: A voice recognition device initializes a vector(12). The device learns the vector to remove an interested sound source from a mixed signal(10). The device is initialized, and generates a mixed noise signal by removing an interested sound source signal from an input mixed signal(14). When the mixed noise signal is generated, the device generates a mask, by comparing the mixed noise signal with the input mixed signal in a time-frequency domain(16). [Reference numerals] (10) Learn a separation vector(w(K)) for separation of a target sound source; (12) Initialize the separation vector(w(K)); (14) Remove a target sound source; (16) Generate a mask using a mixed noise sound source and an input sound source