【MATLAB】freqz2()使用方法官方文檔翻譯

freqz2 二維頻率響應 語句 [H,f1,f2] = freqz2(h) [H,f1,f2] = freqz2(h,[n1 n2]) [H,f1,f2] = freqz2(h,f1, f2) [___] = freqz2(h,___,[dx dy]) freqz2(___)   說明 [H,f1,f2] = freqz2(h) 的返回值 H是h的64*64頻率響應，f1和f2是長度爲64的頻率

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