PROBLEM TO BE SOLVED: To provide a signal analyzer capable of performing frequency resolution processing with improved real-time properties while maintaining resolution equivalent to resolution for a conventional method, and to provide electronic equipment, a program and the like.SOLUTION: A signal analyzer 100 includes a signal acquisition unit 110 which acquires a detection signal from a detection unit 200 having a sensor, and a signal processing unit 130 which performs window function processing for sampling data of the detection signal and Fourier transform processing for data after the window function processing as frequency resolution processing. The jth sampling data Dj of sampling data D0-DN is data sampled in timing after timing when the ith sampling data Di is sampled (0≤i
