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Chapter 16

Fourier Series

三角傅里叶级数
三角傅里叶级数
A Fourier series is a mathematical technique that breaks down periodic functions into an infinite series of sinusoidal harmonics. The trigonometric ...
指数傅里叶级数
指数傅里叶级数
In audio signal processing, the exponential Fourier series plays a crucial role in sound synthesis, allowing complex sounds to be broken down into simpler ...
傅里叶级数 I 的性质
傅里叶级数 I 的性质
The exploration of the properties of the Fourier series begins with linearity. When considering two periodic signals and forming a third by their linear ...
傅里叶级数的性质 II
傅里叶级数的性质 II
When a signal undergoes time scaling, the Fourier series coefficients remain the same, but the representation of the Fourier series changes due to an ...
帕塞瓦尔定理
帕塞瓦尔定理
Parseval's theorem states that if a function is periodic, then the average power of the signal over one period equals the sum of the squared ...
傅里叶级数的收敛
傅里叶级数的收敛
The Fourier series of a signal is an infinite sum of complex exponentials. The infinite sum is often truncated to a finite partial sum to make it ...
离散时间傅里叶级数
离散时间傅里叶级数
The Discrete-Time Fourier Series is a counterpart to the Fourier-series expansion of continuous-time periodic signals. Calculating the expansion ...
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