What is another word for harmonic analysis?
Pronunciation: [hɑːmˈɒnɪk ɐnˈaləsˌɪs] (IPA) 
Harmonic analysis is a mathematical technique used to study the constituent frequencies and their amplitudes in a complex waveform. However, there are several synonyms for this term, such as Fourier analysis, spectral analysis, and frequency analysis. These terms are used interchangeably to describe the process of breaking down a signal into its individual frequency components and analyzing them. Fourier analysis is named after the mathematician Joseph Fourier, who developed the concept of Fourier series in the early 1800s. Spectral analysis refers to the study of a signal's frequency content or energy density in the frequency domain. Frequency analysis is a more general term that could refer to any method of analyzing the frequencies present in a signal.
