• Title/Summary/Keyword: Noise Modeling

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Physical modeling synthesizing of 25 strings Gayageum using white noise as exciter (화이트 노이즈를 익사이터로 이용하는 25현 가야금의 피지컬 모델링 신디사이징)

  • Bae, June;Kim, Jangyoung;Yang, Yoongi
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.22 no.5
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    • pp.740-746
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    • 2018

  • Up until now, attempts to produce computer instruments have been largely focused on two types of sampling methods and physical modeling. Since the sampling method removes much of the harmonics in the sampling process, the effect of exciter that emphasizing the harmonic of the strings are mini. However, the physical modeling method can produce a lot of harmonics, and by emphasizing the harmonics of a particular frequency band among these harmonics, it is possible to produce a sound more like a lively sound. In this paper, we propose a method of using white noise in realizing exciter emphasizing harmonics of pre - specified frequency band in prefectural physical modeling. And comparing the envelope and spectrum of the Gayageum sound, we confirmed that the physical modeling method with the exciter is more suitable for the actual Gayageum sound than the sampling method and the conventional physical modeling method.

  • https://doi.org/10.6109/jkiice.2018.22.4.740 인용 PDF KSCI

The noise impacts of the open bit line and noise improvement technique for DRAM (DRAM에서 open bit line의 데이터 패턴에 따른 노이즈(noise) 영향 및 개선기법)

  • Lee, Joong-Ho
    • Journal of IKEEE
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    • v.17 no.3
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    • pp.260-266
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    • 2013

  • The open bit line is vulnerable to noise compared to the folded bit line when read/write for the DRAM. According to the increasing DRAM densities, the core circuit operating conditions is exacerbated by the noise when it comes to the open bit line 6F2(F : Feature Size) structure. In this paper, the interference effects were analyzed by the data patterns between the bit line by experiments. It was beyond the scope of existing research. 68nm Tech. 1Gb DDR2, Advan Tester used in the experiments. The noise effects appears the degrade of internal operation margin of DRAM. This paper investigates sense amplifier power line splits by experiments. The noise can be improved by 0.2ns(1.3%)~1.9ns(12.7%), when the sense amplifier power lines split. It was simulated by 68nm Technology 1Gb DDR2 modeling.

  • https://doi.org/10.7471/ikeee.2013.17.3.260 인용 PDF KSCI

Modeling error analyses of FIR filters (FIR 필터의 성능 분석)

  • 권오규
    • 제어로봇시스템학회:학술대회논문집
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    • 1987.10b
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    • pp.470-472
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    • 1987

  • This paper deals with the continuous-discrete estimation problem using FIR filters and performs modeling error analyses of the FIR filters, compared to Kalman filter and the limited memory filters, via computer simulations. It is shown that, the less driving noise the system has, the better performance the FIR filter exhibits and that this characteristic appears rare distinctly in nonlinear system than in linear systems.

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