| 摘要 |
<p>PURPOSE:To perform the digital Fourier transgormation with a simple device. CONSTITUTION:Instead of a multiplier, a ROM 2 on which the multiplication result between the input signal and the sine or cosine function in written, ROM 3 on which the information switching the bank of the ROM 2, RAM 7 used for addition is written, and on adder 10 adding the data of the ROM 2 and the data of the RAM 7 are provided. The digital Fourier transgormation device requires no program and has no multiplier. Thus, it can be produced at a low cost with a relatively simple structure.</p> |
