• 한국지구물리탐사학회:학술대회논문집
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• 2003.11a
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• pp.398-401
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• 2003

This paper deals with the recent achievements in AMT data acquisition and processing, which have improved the quality of the collected data,. Comparing AMT with VES, IP and logging data, it is concluded through some case histories that qualified results can be achieved in probing the karst water with AMT technique.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2009.11a
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• pp.285-285
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• 2009

Due to a development of a modem technology as Power Line Communication(PLC) over 200 Mbps, the high-speed multi-media data trasmission could be currently possible. In This paper we develop a high quality media transmitter-receiver based on merging the HomePlug AV, which is 200 Mbps class PLC technology and HDMI Interface technology. Smart Live 6 software were used for the assessment of audio property. As the result of measurement of the HD class images by capturing from the receiver of the PLC, the quality of images couldn't be confirm any deterioration, which has compared with original reflections. In case of audio part as the result of confirmation of the Phase, Magnitude, it has been confirmed that over 90% of nomal transmition and receiving of acoustic signal.

• The Journal of the Acoustical Society of Korea
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• v.22 no.4
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• pp.269-275
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• 2003

In this paper, we proposed the robust watermark diminishing distortion of the original data inserting the watermark in specific coefficients of the frequency domain. In case the alpha is more than 0.5. we found that proposed watermark is detected by experiment of MP3, FFT, Cropping and Echo attack. Our proposed method improved the Cox's method in the SNR aspect.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.1C
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• pp.84-89
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• 2002

In this paper the Viterbi decoder which is used for TCM decoding in wireless modem system under transmission of audio data for the high quality sound is designed by VHDL and implemented by FPGA. After making short explanation about TCM encoding and decoding. I show the effect of channel in computer by using encoder and decoder implemented in FOGA and the bit error rate according to change rate of ($E_b/N_0$).

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.369-370
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• 2006

This paper presents a new method for Huffman decoding specially designed for the MPEG-2 AAC audio. The method significantly enhances the processing efficiency of the conventional Huffman decoding realized with the ordinary binary tree search method. A data structure is newly designed based on the numerical interpretation of the incoming bit stream and its utilization for the offset oriented nodes allocation. The experimental results show the average performance enhancement of 54% and 665%, compared to those of the conventional binary tree search method and the sequential search method, respectively.

• 전기의세계
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• v.53 no.9
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• pp.30-35
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• 2004

초고속 인터넷 기술과 무선 통신망의 발달로 다양한 데이터(video, audio 및 biological data)들을 지원할 수 있는 멀티미디어 시스템의 구현이 가능해짐에 따라 환자의 상태나 요구에 맞추어 효과적인 진료 및 질병 예방을 가능할 수 있게 되었다. U-healthcare 시스템이란 무선 인터넷과 단말기를 생체 계측기와 융합시켜 시간적, 공간적인, 계측장치 제약 없이 환자의 질병관리가 가능한 시스템을 말한다.(중략)

• Proceedings of the Korea Database Society Conference
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• 1997.10a
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• pp.24-48
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• 1997

. Supported byㆍDARPA′s image Understanding (IU) program under "Video Retrieval Based on Language and image Analysis" project.DARPA′s Computer Assisted Education and Training Initiative program (CAETI)ㆍObjective: Develop practical systems for automatic understanding and indexing of video sequences using both audio and video tracks(omitted)

• KLA journal
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• v.29 no.4 s.251
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• pp.2-12
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• 1988

본고는 아직 우리들에게 생소한 분야인 CD-ROM(Compact Disk-Read Only Memory)이라고 하는 정보매체가 어떻게 Audio CD에서 발전하여 컴퓨터의 Data Storage의 매체로 탄생되었는지에 대해 다음과 같은 내용을 해설하였다. 첫째는 매체로서의 잇점과 그것을 정보전달매체로서 이용하였을 때의 특징에 대하여 기술하였으며 둘째는 실제로 CD-ROM을 사용한 시스팀으로서는 어떠한 형태로 되는가,Application을 염두에 두고 생각한다. 셋째는 데이터의 가공에서 디스크의 제작에 이르기까지의 과정에 대하여 기술하였으며 끝으로 장래의 전망과 문제점에 대하여 간단히 기술하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.3
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• pp.571-578
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• 2018

Recently, deep learning techniques have shown superior performance in various kinds of pattern recognition. However, there have been some arguments whether the DNN performs better than the conventional machine learning techniques when classification experiments are done using a small amount of training data. In this study, we compared the performance of the conventional GMM and SVM with DNN, a kind of deep learning techniques, in audio event detection. When tested on the same data, DNN has shown superior overall performance but SVM was better than DNN in segment-based F-score.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.1
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• pp.192-196
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• 2010

Due to a development of a modem technology as Power Line Communication(PLC) over 200 Mbps, the high-speed multi-media data trasmission could be currently possible. The strength of the PLC has no more additional wiring work. PLC has also possible to high quality data transmission with currently electrical cable. It has a various strong point campare with existing wire and wireless communication technologies. In This paper we develop a high quality media transmitter-receiver based on merging the HomePlug AV, which is 200 Mbps class PLC technology and HDMI Interface technology. The video function was used for the VEDEO TEST GENERATOR in order to a property valuation. Smart Live 6 software were used for the assessment of audio property. As the result of measurement of the HD class images by capturing from the receiver of the PLC, the quality of images couldn't be confirm any deterioration, which has compared with original reflections. In case of audio part as the result of confirmation of the Phase, Magnitude, it has been confirmed that over 90% of nomal transmition and receiving of acoustic signal. It can be possible to have HD class Media service through the PLC.