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Abstract

There is provided a digital signal processor having first and second arithmetic operating sections each having a digital multiplier for multiplying values of two digital signal data and a digital accumulator for accumulating an output value of the multiplier, wherein an output of the multiplier in the second arithmetic operating section is connected to one input of the digital signal data of the multiplier in the first arithmetic operating section. There is also provided a digital signal processor in which the output of the multiplier in the second arithmetic operating section is connected to one input of each of both of the multipliers in the first and second arithmetic operating sections, respectively. Thus, the processing time can be reduced in the case of an arithmetic operation such that a plurality of coefficients are multiplied to a signal data value or an approximate value calculation.

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First Claim