Hyung-Min Park

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This paper describes an algorithm called zero-crossing-based amplitude estimation (ZCAE) that enhances speech by reconstructing the desired signal from a mixture of two signals using continuously-variable weighting factors, based on pre-processing that is motivated by the well-known ability of the human auditory system to resolve spatially-separated(More)
An field programmable gate array (FPGA) implementation of independent component analysis (ICA) algorithm is reported for blind signal separation (BSS) and adaptive noise canceling (ANC) in real time. In order to provide enormous computing power for ICA-based algorithms with multipath reverberation, a special digital processor is designed and implemented in(More)
It is well known that binaural processing is very useful for separating incoming sound sources as well as for improving the intelligibility of speech in reverberant environments. This paper describes and compares a number of ways in which the classic model of interaural cross-correlation proposed by Jeffress, quantified by Colburn, and further elaborated by(More)
We present a filter bank approach to perform independent component analysis (ICA) for convolved mixtures. Input signals are split into subband signals and subsampled. A simplified network performs ICA on the subsampled signals, and finally independent components are synthesized. The proposed approach achieves superior performance than the frequency domain(More)
e t T t bstract. A method of converting cyan, magenta, yellow, and black CMYK) digital values into cyan, magenta, yellow, black, light cyan, nd light magenta (CMYKLcLm) in six-color printers is proposed for roviding a better print quality with less dot visibility, high color fidelty, and smooth color transition. Based on the attribute of the depenent(More)
For spectral observations of the Sun with high spectral resolution as well as high spatial resolution and high temporal resolution, we developed an Echelle spectrograph named Fast Imaging Solar Spectrograph (FISS), and installed it in a vertical optical table in the Coude room of the 1.6 meter New Solar Telescope at Big Bear Solar Observatory. With the aid(More)
Hyung-Min Park , Ho-Young Jung , Te-Won Lee , and Soo-Young Lee Department of Electrical Engineering and Brain Science Research Center, Korea Advanced Institute of Science and Technology, 373-1, Kusong-dong, Yusong-gu, Taejon, 305-701, Korea (TEL: +82-42-869-8031, FAX: +82-42-869-8570, E-mail: mhp@eeinfo.kaist.ac.kr) Computational Neurobiology Laboratory(More)