| 摘要 |
PURPOSE:To surely separate/extract a specified signal from a sum signal of one-dimensional signals of kinds different from each other by simple constitution. CONSTITUTION:Outputs of a first filter bank 1 analyzing an input signal f(t) and a second filter bank 2 consisting of the Hilbert pair of the first filter bank 1 are analyzed to an amplitude term and a phase term 1 by an amplitude detection part 3 and a phase detection part 4, and the amplitude term is inputted to an amplitude analysis part 5. The amplitude analysis part 5 detects the characteristic point of the amplitude term, and connects the characteristic points and outputs the result to a characteristic point process part 6. The characteristic point process part 6 performs the work such as the removal, etc., of unnecessary characteristic point based on the information of the connected characteristic points. The worked characteristic points information are inputted to an amplitude restoration part 7, and amplitude information is restored, and is inputted to a filter output restoration part 8 together with the output of the phase detection part 4, and the signals corresponding to the outputs of the first, the second filter banks 1, 2 are obtained. |
