Parseval's theorem
Relación de Parseval
- Date
- 1799 · confidence high
- Place
- Paris, Île-de-France, France
- Credited to
- Marc Antoine Parseval
- Field
- Knowledge & symbols
What was discovered
Theorem stating that the sum of the squares of a function equals the sum of the squares of its Fourier transform (unitarity of the Fourier transform); fundamental for signal processing and for conserving energy in physics.
What it led to
- digital signal analysis
- information theory and data transmission
- audio and image processing
- generalization as the Plancherel theorem