Abstract: Provided is a method of controlling a ultrasound diagnostic apparatus, in which a plurality of tracking pulses are transmitted at preset intervals to observe a shear wave induced in a region of interest (ROI) of an object, multi-reception scan lines corresponding to each of the tracking pulses are set, and signal processing is selectively performed on the multi-reception scan lines.

Abstract: A noise elimination method and apparatus. The method eliminates noise from an input signal containing a voice signal mixed with a noise signal. The method includes detecting a noise section, in which the noise signal is present, from the input signal; obtaining a weight to be used for the input signal from signals of the noise section; and filtering the input signal using the obtained weight. The method and apparatus enable a mobile robot to eliminate noise in real time and effectively detect and recognize voice.

Abstract: The present invention relates to a mobile device capable of performing biomedical signal measurement and a health care method using the same. It is an object of the present invention to provide a mobile device capable of efficiently performing health care functions for a user by checking a user's state of health using a handheld mobile device mounted with a biomedical signal measurement module, which can be used both as a mobile device and in measuring the emotional state and physical condition of a user if necessary, and a health care method using the same.

Abstract: A method and apparatus for robust speaker localization and a camera control system employing the same are provided. The apparatus for speaker localization includes: a difference spectrum obtaining section which obtains a difference spectrum of a first pseudo-power spectrum for a speech section and a second pseudo-power spectrum for a non-speech section detected in a voice signal output from a microphone array; and a speaker direction estimation section which detects a peak value in any one of the difference spectrum and the first pseudo-power spectrum, and estimates the direction of a speaker based on the direction angle corresponding to the detected peak value.

Abstract: An apparatus and method of controlling a mobile body that travels around a sound source which generates a sound. This apparatus includes a traveling information producer for producing traveling information, which is information about traveling of the mobile body; a direction estimator for estimating a direction in which the mobile body is located with respect to the sound source; and a position determiner for determining a position of the mobile body using the traveling information and the estimated direction of the mobile body.

Abstract: An apparatus for tracking and identifying objects includes an audio likelihood module which determines corresponding audio likelihoods for each of a plurality of sounds received from corresponding different directions, each audio likelihood indicating a likelihood a sound is an object to be tracked; a video likelihood module which receives a video and determines video likelihoods for each of a plurality of images disposed in corresponding different directions in the video, each video likelihood indicating a likelihood that the image is an object to be tracked; and an identification and tracking module which determines correspondences between the audio likelihoods and the video likelihoods, if a correspondence is determined to exist between one of the audio likelihoods and one of the video likelihoods, identifies and tracks a corresponding one of the objects using each determined pair of audio and video likelihoods.

Abstract: An adaptive beamforming apparatus and method includes a fixed beamformer that compensates for time delays of M noise-containing speech signals input via a microphone array having M microphones (M is an integer greater than or equal to 2), and generates a sum signal of the M compensated noise-containing speech signals; and a multi-channel signal separator that extracts pure noise components from the M compensated noise-containing speech signals using M adaptive blocking filters that are connected to M adaptive canceling filters in a feedback structure and extracts pure speech components from the added signal using the M adaptive canceling filters that are connected to the M adaptive blocking filters in the feedback structure.

Abstract: An apparatus and method of controlling a mobile body that travels around a sound source which generates a sound. This apparatus includes a traveling information producer for producing traveling information, which is information about traveling of the mobile body; a direction estimator for estimating a direction in which the mobile body is located with respect to the sound source; and a position determiner for determining a position of the mobile body using the traveling information and the estimated direction of the mobile body.

Abstract: A noise elimination method and apparatus. The method eliminates noise from an input signal containing a voice signal mixed with a noise signal. The method includes detecting a noise section, in which the noise signal is present, from the input signal; obtaining a weight to be used for the input signal from signals of the noise section; and filtering the input signal using the obtained weight. The method and apparatus enable a mobile robot to eliminate noise in real time and effectively detect and recognize voice.

Abstract: An apparatus for tracking and identifying objects includes an audio likelihood module which determines corresponding audio likelihoods for each of a plurality of sounds received from corresponding different directions, each audio likelihood indicating a likelihood a sound is an object to be tracked; a video likelihood module which receives a video and determines video likelihoods for each of a plurality of images disposed in corresponding different directions in the video, each video likelihood indicating a likelihood that the image is an object to be tracked; and an identification and tracking module which determines correspondences between the audio likelihoods and the video likelihoods, if a correspondence is determined to exist between one of the audio likelihoods and one of the video likelihoods, identifies and tracks a corresponding one of the objects using each determined pair of audio and video likelihoods.

Abstract: A method and apparatus for robust speaker localization and a camera control system employing the same are provided. The apparatus for speaker localization includes: a difference spectrum obtaining section which obtains a difference spectrum of a first pseudo-power spectrum for a speech section and a second pseudo-power spectrum for a non-speech section detected in a voice signal output from a microphone array; and a speaker direction estimation section which detects a peak value in any one of the difference spectrum and the first pseudo-power spectrum, and estimates the direction of a speaker based on the direction angle corresponding to the detected peak value.

Abstract: An adaptive beamforming apparatus and method includes a fixed beamformer that compensates for time delays of M noise-containing speech signals input via a microphone array having M microphones (M is an integer greater than or equal to 2), and generates a sum signal of the M compensated noise-containing speech signals; and a multi-channel signal separator that extracts pure noise components from the M compensated noise-containing speech signals using M adaptive blocking filters that are connected to M adaptive canceling filters in a feedback structure and extracts pure speech components from the added signal using the M adaptive canceling filters that are connected to the M adaptive blocking filters in the feedback structure.

Abstract: The present invention relates to a mobile device capable of performing biomedical signal measurement and a health care method using the same. It is an object of the present invention to provide a mobile device capable of efficiently performing health care functions for a user by checking a user's state of health using a handheld mobile device mounted with a biomedical signal measurement module, which can be used both as a mobile device and in measuring the emotional state and physical condition of a user if necessary, and a health care method using the same.