各位大大,小弟有一个问题想请教一下:AD2S1203的输出(MDATA)经过SINC3滤波器后输出一个16位的结果,在滤波时有一个抽取比率M,M与输出位数N之间有N=3*log2M的关系,如果取M=64,则输出的数据N=18位,那么问题来了,在输出的18位中应该怎样选取其中的16位输出呢?如果M=128,则N=21位,那么在这21位中怎样选16位呢?
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