14. Parseval’s Theorem
Parseval’s Theorem establishes a fundamental relationship between the energy of a function in time and frequency domains, showcasing its relevance in civil engineering and mathematical applications. This theorem is integral to analyzing periodic functions through Fourier series, revealing insights into vibrational analysis and energy calculations in structural dynamics. The exploration of Parseval’s Theorem extends to practical engineering scenarios, affirming its crucial role in computational and structural mechanics.
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What we have learnt
- Parseval's Theorem equates the energy of a function in the time domain to its Fourier coefficients in the frequency domain.
- The theorem is applied in various civil engineering contexts, including structural vibration analysis and solving partial differential equations.
- Conditions for the validity of Parseval's Theorem include square integrability and absolutely convergent Fourier series.
Key Concepts
- -- Parseval's Theorem
- A theorem that relates the energy of a periodic function to the sum of the squares of its Fourier coefficients.
- -- Fourier Series
- A way to represent a function as a sum of sinusoidal basis functions, which can help in analyzing and understanding periodic functions.
- -- Energy in Signal Processing
- The total energy of a signal quantified through its representation in frequency or time domains, vital for applications such as structural health monitoring.
- -- Orthogonality of Functions
- A property that implies certain functions, such as sine and cosine in Fourier series, do not affect each other when integrated over specific intervals, aiding in simplifications during calculations.
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