| 摘要 |
PURPOSE:To realize a highly efficient adaptive filtration device having a simple circuit configuration, by outputting a signal of the center past of a cascade-connected delay line as a present signal. CONSTITUTION:When an output signal Xn-p of a delay line Tp is made a main signal, outputs of delay lines Tp+1... can be regarded as a past signal. Accordingly, outputs of the delay lines Tp+1... are inputted to variable factor devices Wp+1... and a correlation component is estimated from the main signal and the past signal. In the same way, an input signal Xn and outputs of delay lines T1... can be regarded as a future signal against the output signal Xn-p of the delay line Tp. Accordingly, outputs of the delay lines T1... are inputted to variable factor devices W1..., and a correlation component is estimated from the main signal and the future signal. As a result, a better correlation component is estimated as a result of adding the outputs of the variable factor device. |
