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如何提高tms320vc5509a的运算效率,例如卷积运算

程序的采样率是148k,cpu时钟是228MHz,现在需要在一定时间内完成大量的累乘和移位赋值运算,用for循环的方法每次都会超出时间很久,有什么其他方法可以提高效率吗?谢谢