| 摘要 |
PURPOSE:To enable the arbitrary setting of frequency resolving capacity, by providing a trigonometric function generator for inputting a reference signal, a multiplier for inputting vibration data and the output of the function generator and a subtracter, an integrator and an operator succeeding to the former two. CONSTITUTION:A reference signal P is inputted to a trigonometric function generator 14 while vibration data Xi and the output of the function generator 14 are inputted to a multiplier 10a and the data xi and the output of the function generator 14 are inputted to a multiplier 10b. The outputs of division devices 13a, 13b are respectively inputted to an amplitude operator 15 and an output operator 16. A subtracter 11a inputs the outputs of the divider 13a and the multiplier 10a and the output thereof is inputted to an integrator 12a. It is similar with respect to a subtracter 11b. By this method, a frequency analysis apparatus capable of arbitrarily setting frequency resolving capacity can be obtained. |
