| 摘要 |
PURPOSE:To attain filtering at the same time when plural signals are operated by fetching a signal processed for the operation in one time slot of time division and preparing a numeric table required for the operation. CONSTITUTION:The product sum between an output of a filter and an external signal is attained by using one circuit by way of the external signal so as to be used as a variable of product sum in place of an input/output value of the filter and its delayed value in taking notice that a calculating formula of the digital filter is the product sum between a fixed constant and the variable. |
