11. Fourier Transform and Properties
The chapter explores the Fourier Transform and its properties, which are essential for analyzing signals in the frequency domain. It covers definitions, computation techniques, and key applications in civil engineering, including vibration analysis and heat transfer problems. Understanding Fourier Transforms is crucial for analyzing periodic and non-periodic phenomena, making the topic foundational for engineering studies.
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Sections
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What we have learnt
- The Fourier Transform converts time-domain signals into frequency-domain representations.
- Existence conditions for Fourier Transforms include absolute integrability and limited discontinuities.
- The Fourier Transform exhibits linearity, time shifting, frequency shifting, and other properties essential for signal analysis.
Key Concepts
- -- Fourier Transform
- A mathematical transform that converts a function from the time domain to the frequency domain.
- -- Inverse Fourier Transform
- A process to recover the original function from its Fourier Transform.
- -- Dirichlet’s Conditions
- Conditions for the existence of Fourier Transform, including absolute integrability and finite discontinuities.
- -- Convolution Theorem
- A theorem that states the Fourier Transform of a convolution of two functions is the product of their Fourier Transforms.
- -- Discrete Fourier Transform (DFT)
- A transform used for analyzing sampled signals, particularly in digital signal processing.
Additional Learning Materials
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