freqz函數(shù)matlab freqs函數(shù)和freqz matlab中freqz函數(shù)怎么用?Freqz是濾波器的頻率響應(yīng)函數(shù)。[h,w]=freqz(B,a,n)返回n點復(fù)頻率響應(yīng)向量h和n點頻率向量w。B和a是系統(tǒng)傳遞函數(shù)... 2021-03-13 1816次瀏覽