Samsung Electronics Co., Ltd.

Hyung-Joon Lim

Ki Wan Eom

Weiwei Cui

An apparatus for estimating a Direction of Arrival (DOA) of a wideband includes a first signal receiving unit and a second signal receiving unit to receive a wideband signal while satisfying d&#x2266;Mc/2f, wherein 'd' denotes a distance the first signal receiving unit and the second signal receiving unit are spaced apart from each other, 'c' denotes the speed of sound, &#x2018;M&#x2019; denotes a number of wideband frequencies being a number of fast Fourier transformation (FFT) points of a wideband signal, and &#x2018;f&#x2019; denotes a sampling frequency, and a DOA calculating unit to calculate a DOA (&#x3b8;) using a normalized frequency () which is obtained by performing an FFT on the respective wideband signals transmitted from the first signal receiving unit and the second signal receiving unit, and using the distance d.

Direction of arrival estimation apparatus and method thereof

A microphone signal compensation apparatus includes a plurality of audio input units to respectively receive a target signal, each audio input unit of the plurality of audio input units including a microphone; a constant filter unit to selectively apply a constant filtering calibration scheme to signals output by the plurality of audio input units to compensate for a difference in at least one characteristic among the audio input units, the constant filtering calibration scheme being estimated from an average value of a ratio of a desired signal to a reference signal among the signals output by the plurality of audio input units; and a noise remover to remove noise from the signals processed by the constant filter unit, and to separate the target signal from the signals from which the noise has been removed.

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Suwon-si, South Korea

Hyung-Joon Lim