Search - spectrum of fourier in matlab

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[Other] NegativeFrequency DL : 0: 本文讨论了信号经过傅立叶变换所得频谱的物理意义，其中着重于负频率成分。因为许多信号与系统的教材中都提出负频率成分没有物理意义，本文以多方面的实例证明了负频率成分不但具有明确的物理意义，而且有重要的工程应用价值。文章还用MATLAB程序演示了如何用几何方法求傅立叶反变换，把集总频谱合成为时域信号，从中也可鲜明地看出负频率成分的意义。(学习用)-This paper discusses the signal after Fourier transform from the physical meaning of the spectrum, which focuses on the negative frequency components. Signals and Systems because many materials have no negative frequency components of the physical meaning of this article to a wide range of examples to prove a negative frequency components not only specific physical meaning, but also have important engineering application value. Article also demonstrates how MATLAB program using the geometric method for the anti-Fourier transform, spectrum把集total synthesis time domain signal, which can also be vividly seen in the significance of the negative frequency components. (To learn)
Date : 2026-01-03 Size : 74kb User : 安浩