Spectrum Analyzer

when purchasing a spectrum analyzer you need to distinguish first between an analog type and a digital one. in an analog spectrum analyzer the middle frequencies are tuned in automatically. this means the machine will automatically measure and analyze the complete range of frequencies that is was originally programmed to do. the analog types are equipped with a variable band pass filter to do its job. unlike analog, digital spectrum analyzers incorporate the fast fourier transform of fft. fft is a mathematical process frequency spectrum. because the waveform is broken down into components and digitized, it is easier fro a computer to make precise measurements, compute the transformations, and process the audio information.