Haar wavelet

Haar wavelet is a type of mathematical wave that scientists use to help them understand different types of data—like pictures, sound, and numbers. It's named after a person called Alfréd Haar, who invented it in 1909. The wave is made up of a repeating pattern of peaks and troughs, like a wave at the beach. Scientists use a mathematical formula to make the peak of the wave bigger or smaller, like making a wave crash onto the beach more or less strongly. These waves can be used to break down data into its smallest pieces, which helps scientists understand it better.