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After reading 1425 websites, we found 12 different results for "what is a Fourier series"
a method of expressing a periodic function in terms of sinusoidal basis functions
The Fourier series is a method of expressing a periodic function in terms of sinusoidal basis functions.
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an expansion of a periodic function
f(x) would not be periodic and it would not work because a Fourier series is an expansion of a periodic function in terms of an infinite sum of sines and cosines.
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which is a method of expressing an arbitrary periodic function as a sum of cosine terms
This applet demonstrates Fourier series, which is a method of expressing an arbitrary periodic function as a sum of cosine terms.
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a way to represent a function as the sum of sine waves
If you remember your schooling on Fourier series, you recall that Fourier series is a way to represent a function as the sum of sine waves.
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a series whose terms are composed of trigonometric functions
A Fourier series is a series whose terms are composed of trigonometric functions.
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weighted sums of sines and cosines that can represent any periodic signal
Fourier series are weighted sums of sines and cosines that can represent any periodic signal.
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The representation of a periodic function
The representation of a periodic function as a sum of sinusoids is known as a Fourier series.
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Such a decomposition of periodic signals
Such a decomposition of periodic signals is called a Fourier series.
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a sum of sine and cosine functions
The Fourier series is a sum of sine and cosine functions.
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periodic functions
In signal processing you encounter the problem, that Fourier series represent periodic functions and that Fourier series satisfy convolution theorems (i.e. convolution of Fourier series corresponds to multiplication of represented periodic function and vice versa), but periodic functions cannot be convolved with the usual definition, since the involved integrals diverge.
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a mathematical tool used for analyzing periodic functions by decomposing such a function into a weighted sum of much simpler sinusoidal component functions sometimes referred to as normal Fourier modes, or simply modes for short
The Fourier series is a mathematical tool used for analyzing periodic functions by decomposing such a function into a weighted sum of much simpler sinusoidal component functions sometimes referred to as normal Fourier modes, or simply modes for short.
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a sum of this form: where each of the squares () is a different number, and one is adding infinitely many terms.
A Fourier series is a sum of this form: where each of the squares () is a different number, and one is adding infinitely many terms.
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