| 摘要 |
PURPOSE:To obtain a filtering value, differential value and estimation value for effective components suitable for an input signal, by extracting the characteristics of the input signal. CONSTITUTION:An input signal x is stored in a buffer memory 2 via an A/D converter 1, and a Hear converter 3 and inverse Haar converter are used and 4, the result of discrimination 14 is applied to the converter 4 so that an error of an approximated value 12 is a prescribed value or below by a discriminator 5, a filtering value U, differentiated value V and estimated value W are calculated and outputted u, v, w from D/A converters 6, 7, 8. Since the function for automatically adjusting the intensity of filtering is provided in accordance with the amount of unnecessary components and noises in the input signal x, the filtering value, the differentiated value and the estimated value corresponding to the effective components can always be effectively outputted to the utmost. |
