Sine, Cosine

Sine, Cosine

http://www.360docs.net/doc/info-a22e73ea524de518964b7df9.html /p/2015923723

实行定点正弦或余弦波的查找表的方法,利用四分之一波的对称性

查找表(Sine块或Cosine块)

描述

Sine, Cosine

Sine, Cosine

Sine 和Cosine块实现了正弦和/或余弦波在固定点使用查找表的方法,利用四分之一波的对称性

Sine和Cosine块可以输出的输入信号的下列功能,这取决于你选择用于Output formula参数:∙sin(2πu)

∙cos(2πu)

∙exp(i2πu)

∙sin(2πu) 和cos(2πu)

定义查找表点的数目在Number of data points for lookup table参数. 块的实现是最有效的,当您指定的查找表中的数据点(2^n)+1,其中n是一个整数。

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