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《信号与系统提高.ppt

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Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 滤波应用举例 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1 H(jw) w 3π -3π (a) 1 H(jw) w 4π -4π (c) 1 H(jw) w π -4π (b) -π 4π 1 H(jw) w 3π -4π (d) -3π 4π Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1 H(jw) w 3π -3π (a) 1 H(jw) w 4π -4π (c) 1 H(jw) w 3π -4π (b) -3π 4π 1 H(jw) w 3π (d) -3π Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1 H(jw) w 3π -5π -3π 5π Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1 H(jw) w π -π Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 第四章 傅立叶变换 傅立叶变换与反变换 傅立叶变换与反变换定义、周期信号的傅立叶变换、特殊信号的傅立叶变换 傅立叶变换的性质 线性、时移、频移、尺度、共轭、时/频域微分、时/频域积分、卷积、乘积、对偶、能量定理 利用傅立叶变换求解线性常系数微分方程 已知两个量求第三个量,部分分式展开 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. h1(t) h2(t) x(t) y(t) Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. h1(t) h2(t) x(t) y(t) h1(t) X h2(t) x(t) X y(t) r1(t) r2(t) Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. X H(jw) x(t) X v(t) y(t) z(t) 1 wM X(jw) wM wc Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. x(t) + y(t) w(t) 1 H(jw) 3pi 5pi (●)2 1 pi X(jw) Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. h1(t) h2(t) h3(t) + h4(t) x(t) y(t) - + Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.

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