| 摘要 |
PURPOSE:To realize the noise elimination device able to reproduce transient information included substantially in a signal as a data of time history. CONSTITUTION:A high speed Fourier transformation processing means 2 divides a signal to be analyzed according to a time history and the divided time history waveform is subject to frequency region data conversion by the fast Fourier transformation. A standardizing means 3 applies nonlinear filter processing to the converted frequency region data. An inverse FFT processing means 4 converts the result of nonlinear filter processing into a time history data. |
