The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Naoyuki Aikawa - One of the best experts on this subject based on the ideXlab platform.
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A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
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ISCAS - A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
Takashi Yoshida - One of the best experts on this subject based on the ideXlab platform.
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A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
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ISCAS - A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
Yosuke Sugiura - One of the best experts on this subject based on the ideXlab platform.
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A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
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ISCAS - A General Expression of the low-pass maximally flat FIR digital differentiators
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Takashi Yoshida, Yosuke Sugiura, Naoyuki AikawaAbstract:This paper describes a General Expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast, the proposed method can adjust the value of the group delay at ω = 0, so that the proposed method can realize not only the linear phase characteristics but the low or the high delay characteristics.
Leo C. Van Rijn - One of the best experts on this subject based on the ideXlab platform.
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A simple General Expression for longshore transport of sand, gravel and shingle
Coastal Engineering, 2014Co-Authors: Leo C. Van RijnAbstract:Longshore transport of sand, gravel and shingle has been studied using field and laboratory data over a wide range of conditions. A detailed model (CROSMOR) for cross-shore and longshore sediment transport has been used to determine the effects of wave period, grain size, beach/surf zone slope and type of waves (wind waves or swell waves). The longshore transport was found to be proportional to wave height to the power 3.1 (≈H3.1), to grain size to the power -0.6 (≈d50-0.6) and to beach slope to the power 0.4 (≈tanβ0.4). Regular swell waves yield much larger (factor 1.5) longshore transport rates than irregular wind waves of the same height. It is proposed to take this effect into account by a swell correction factor. Based on all results, a new simple and General (dimensionally correct) Expression for longshore transport of sand, gravel and shingle beaches with grain sizes between 0.1 and 100mm has been derived. Short-term and long-term field data of sand, gravel and shingle have been used for verification. In most cases the predicted longshore transport rates are within a factor of 2 of the measured values. The CERC and Kamphuis formulas have also been tested. © 2014 Elsevier B.V.
Leo C Van Rijn - One of the best experts on this subject based on the ideXlab platform.
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a simple General Expression for longshore transport of sand gravel and shingle
Coastal Engineering, 2014Co-Authors: Leo C Van RijnAbstract:Abstract Longshore transport of sand, gravel and shingle has been studied using field and laboratory data over a wide range of conditions. A detailed model (CROSMOR) for cross-shore and longshore sediment transport has been used to determine the effects of wave period, grain size, beach/surf zone slope and type of waves (wind waves or swell waves). The longshore transport was found to be proportional to wave height to the power 3.1 (≈ H3.1), to grain size to the power − 0.6 (≈ d50− 0.6) and to beach slope to the power 0.4 (≈ tanβ0.4). Regular swell waves yield much larger (factor 1.5) longshore transport rates than irregular wind waves of the same height. It is proposed to take this effect into account by a swell correction factor. Based on all results, a new simple and General (dimensionally correct) Expression for longshore transport of sand, gravel and shingle beaches with grain sizes between 0.1 and 100 mm has been derived. Short-term and long-term field data of sand, gravel and shingle have been used for verification. In most cases the predicted longshore transport rates are within a factor of 2 of the measured values. The CERC and Kamphuis formulas have also been tested.
