Design of Signal Separation Device Based on FFT Algorithm

This article gives a design of signal separation device based on Fast Fourier Transform algorithm. The device obtains the intensity information of each frequency component in the signal by performing Fast Fourier Transform on the input signal, and resynthesizes the separated signal using DDS chip. The device has the functions of real-time processing, spectrum analysis, peak frequency extraction and DDS output, which can meet the needs of applications with low phase requirements in the field of music and sound processing. Experimental results show that the device can effectively separate and extract specific frequency components of the signal, and achieve output of the separated signal with a relative frequency error of less than −5 orders of magnitude compared with the original signal. This article demonstrates the feasibility and effectiveness of the design in practical applications while providing a solution to the problem of signal separation in the power sector and other fields.