文件名称:freqz_m
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求取系统的绝对幅度响应、相对的db值幅度响应、相位响应和群延时响应的函数
％
％db为相对振幅(dB)
％mag为绝对振幅
％pha为相位响应
％grd为群延时
％w为频率样本点向量
％b为Ha(z)分子多项式系数(对FIR而言，b=h)
％a为Hz(z)分母多项式系数(对FIR而言，a=1)
％-strike rate system in response to the absolute and relative value range db response phase and group delay response to the response function%% db relative amplitude (dB)% mag as the absolute amplitude% of MTS Phase Response% for the group delay grd% w frequency of sample points for the vector b Ha% (z) elements polynomial coefficient (F IR, b = h)% for a Hz (z) denominator polynomial coefficient (right FIR, a = 1)%
％
％db为相对振幅(dB)
％mag为绝对振幅
％pha为相位响应
％grd为群延时
％w为频率样本点向量
％b为Ha(z)分子多项式系数(对FIR而言，b=h)
％a为Hz(z)分母多项式系数(对FIR而言，a=1)
％-strike rate system in response to the absolute and relative value range db response phase and group delay response to the response function%% db relative amplitude (dB)% mag as the absolute amplitude% of MTS Phase Response% for the group delay grd% w frequency of sample points for the vector b Ha% (z) elements polynomial coefficient (F IR, b = h)% for a Hz (z) denominator polynomial coefficient (right FIR, a = 1)%
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freqz_m.m