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)%