DFT (Discrete Fourier Transform)

The Discrete Fourier Transform (DFT) is a mathematical tool that analyzes a digital signal, such as sound or image data, by breaking it down into its individual frequency components. Think of it like taking a complex musical chord and identifying each note that makes it up. DFT transforms the data from its original form, which is often in the time or spatial domain, into a frequency domain, revealing the different cyclical patterns within the signal. This helps us understand the underlying structure, filter out noise, or process signals more effectively in various applications like audio analysis, image processing, and communications.