qmf                 package:waveslim                 R Documentation

_Q_u_a_d_r_a_t_u_r_e _M_i_r_r_o_r _F_i_l_t_e_r

_D_e_s_c_r_i_p_t_i_o_n:

     Computes the quadrature mirror filter from a given filter.

_U_s_a_g_e:

     qmf(g, low2high=TRUE)

_A_r_g_u_m_e_n_t_s:

       g: Filter coefficients.

low2high: Logical, default is 'TRUE' which means a low-pass filter is
          input and a high-pass filter is output.  Setting 'low2high=F'
          performs the inverse.

_D_e_t_a_i_l_s:

     None.

_V_a_l_u_e:

     Quadrature mirror filter.

_A_u_t_h_o_r(_s):

     B. Whitcher

_R_e_f_e_r_e_n_c_e_s:

     Any basic signal processing text.

_S_e_e _A_l_s_o:

     'wave.filter'.

_E_x_a_m_p_l_e_s:

     ## Haar wavelet filter
     g <- wave.filter("haar")$lpf
     qmf(g)

