The principle is to convert electromagnetic signals (such as radio waves, sound waves, etc.) into frequency components, and the components are accurately analyzed and identified.
It converts the signal into spectral components by weighted and FFT (fast Fourier transform) analysis of the received signal. It then uses digital signal processing techniques to identify the frequency components and extract useful information from them. In communications, spectrum chips can help identify radio interference and noise, as well as decode digital signals.
In the field of audio, it can help improve the quality of audio signals and extract the required information from audio signals.