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- 저자 : 房萬源 (검색결과 58 건)
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房萬源 관동대학교 1982 關大論文集 Vol.10 No.2
This paper presents a class of nonrecursive digital filter which lends itself to high speed processing applications because it avoids dedicated hardware multipliers. The proposed nonrecursive filter is constructed as a cascade o basic section, each characterized gy coefficients of integer powers of two, since multiplication by a power of two can easily be implemented without a hardware multiplier, the proposed filter does not require costly multipliers and can be operated at a speed comparable to that of an adder. Hence, it could be used for real time video type signal processing.
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오성훈,방만원 木浦大學校 情報産業硏究所 1997 情報産業硏究誌 Vol.5 No.-
In this paper, the intelligent and remote control system is proposed to provide the remote control service of electric and mechanical devices to the user by using a pager. The proposed system is composed of a signal detection part, a decoder, an interface part with a pager, a programmable control part and a power control part. At first, the system analyzes the communication protocol transmitted by the user at a remote place. Next, it controls the devices if the password is correct one. The H/W part is designed for the low electric power consumption and the protection of a circuit in case of a power failure using OrCAD. We develop the intelligent algorithm to provide the password, to allow the interface with a H/W system and to recognize the device for the control. The simulation is carried out to analyze the performance of the proposed system for the control of an electric light and an electric gas stove. The results show that the system can control the systems by doing ON/OFF operation successfully at the request of a pager.
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다중 객체 환경에서 고속 이동체의 추적 시스템에 관한 연구
김화윤,박순영,방만원 木浦大學校 情報産業硏究所 1999 情報産業硏究誌 Vol.7 No.-
In this paper, a fast-moving object tracking system which can detect motion of moving objects from the image sequences and predict moving direction and velocity of detected object is presented for tracking of a fast-moving object in multi-objects environment. First, the proposed system detects moving objects and computes movements by applying a differential operation to the image sequences. Secondly, the motion vector and center of a moving object are measured by using Selective Region Block Matching Algorithm(SBMA) and Local Block Matching Algorithm(LBMA). Finally, the system tracks a fast-moving object by predicting moving direction and velocity from the accumulated motion vector. The computer simulation is carried out to analyze the performance of the proposed system. The results show that the proposed system can track a fast-moving object in multi-objects environment effectively.
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朴淳永,房萬源 木浦大學校 情報産業硏究所 1993 情報産業硏究誌 Vol.1 No.-
In this paper, we examine the method of articulation test which is effective in evaluating the speech quality in cellular phone. The korean monosyllable lists for articulation test are developed based upon the frequency of occurrence of korean monosyllables used under natural environment. The monosyllable articulation lists are recorded through the public switch telephone network(PSTN) and cellular phone system. The recorded lists are presented to the listeners through the headphone in order to keep the listening conditions equal. Some articulation scores obtained within the PSTN and between the cellular phone system and PSTN are presented.
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房萬源 관동대학교 1986 關大論文集 Vol.14 No.2
本 論文에서는 impulse性 雜音 에너지를 利用한 母音의 pitch 檢出法을 취급 하였다. pitch의 檢出은 에너지 比較法에 의한 有聲音ㆍ無聲音 識別 出力과, 高域通過 瀘波器, 全波整流 回路, 短時間 積分器로 構成된 impulse 雜音 에너지의 出力을 論理的 結合 함으로써 可能하였다. 試作回路를 만들어 實驗한 結果 正確한 pitch를 얻을 수 있었으며, hardware의 構成이 간단하고 경제적이며 지연시간이 充分히 적으므로 實時間 音聲信號 處理를 目的으로 하는 分野에서 實用 可能한 方法이다. In this paper, using impulsive noise energy in speech signal processing, a vowel pitch detection method is disscussed. As AND product with output of Voiced/Unvoiced discriminator and output of impulsive noise energy detector consists of high pass filter, full wave rectifier and short time integrator, the pitch detection is possible. The hardare of this technique is made and experimented. In this experimental results, precision pitch is obtained. Since the delay time of this system is sufficiently small, real time signal prossing is possible.
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房萬源 관동대학교 1985 關大論文集 Vol.13 No.3
The aim of this study was to improve the channel transmission rate and SNR relationship of the delta modulation of speech. This aim has been achieved by taking advantage of the redundancies in the intersyllable and inter-word quiet time of speech. While preserving the dynamic range and SNR of adaptive delta modulation, the transmission bit rate has been reduced with only a slight increase in system complexity. Quantitatively, the improvement in the necessary channel rate is 120%.
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품질이 보증되는 객체지향 시스템 개발을 위한 ISO-15504(SPICE) 프로세스 연구
정유진,방상원,방만원 木浦大學校 工業技術硏究所 1998 工業技術硏究誌 Vol.8 No.-
ISO Quality standards increase S/W operating efficiency with standardization and quality assessment. And OO programming technologies increase S/W operating efficiency with natural development methodology. We propose OMT process', that is combined with ISO-15504(SPICE) and OMT, framework and lifecycle and planning phase's task. OMT process will help S/W development more easy.
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방만원 관동대학교 1980 關大論文集 Vol.8 No.1
In this paper, frequency multiplier, using an integrator and an exclusive OR gate wa discussed. This frequency multiplier that can be used for multiplying the frequency by 2ⁿ times. By cascading n such stage in sequence, a frequency multiplication of 2ⁿ can be achieved. The circuit adjustedments are simpler and operation is more reliable.
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房萬源 관동대학교 1984 關大論文集 Vol.12 No.2
A speech processing system has been developed which is capable of providing an accurate indication of whether or not a given speech segment is voiced or unvoiced. In comparision to other existing techniques, this one avails itself for easy implementation, and it offers a realiable voiced/unvoiced decision even in the presence of some competing speech. A voiced/unvoiced decision method has been described based on classical spectral energy distribution for voiced and unvoiced speech signal.
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방만원 관동대학교 1980 關大論文集 Vol.8 No.1
This paper discussed the Zero-crossing counter type frequency to voltage converter. The converter has very good nice linearity and that can be controlled discrimination sensitivity. The paper present that possible use for voice signal operation of computer or teletypewriter input port.
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