发明授权
- 专利标题： Method for performing complex fast fourier transforms (FFT's)
- 专利标题（中）： 执行复杂快速傅立叶变换（FFT）的方法
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申请号： US580467申请日： 1995-12-28
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公开(公告)号： US5835392A公开(公告)日： 1998-11-10
- 发明人: Carole Dulong , Larry M. Mennemeier , Eiichi Kowashi , Alexander D. Peleg , Stephen A. Fischer
- 申请人： Carole Dulong , Larry M. Mennemeier , Eiichi Kowashi , Alexander D. Peleg , Stephen A. Fischer
- 申请人地址： CA Santa Clara
- 专利权人： Intel Corporation
- 当前专利权人： Intel Corporation
- 当前专利权人地址： CA Santa Clara
- 主分类号： G06F17/14
- IPC分类号： G06F17/14 ; G06F15/00 ; G06F7/38
摘要：
A method in a computer system of performing a butterfly stage of a complex fast fourier transform of two input signals. First, a packed multiply add is performed on a first packed complex value generated from a first input signal and a set of trigonometric values to generate a first product. Then, a second product is generated which comprises the first product with a sign inverted. A packed add of the second product and a second complex value generated from a second input signal is performed to generate a first result, and the first product and the second complex value to generate a second result.
公开/授权文献
- US4565515A Nozzle assembly for extruding a synthetic-resin tube 公开/授权日：1986-01-21
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