trackfreq                package:emu                R Documentation

_f_u_n_c_t_i_o_n _t_o _f_i_n_d _t_h_e _f_r_e_q_u_e_n_c_i_e_s _o_f _a _s_p_e_c_t_r_a_l _o_b_j_e_c_t

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

     Find the frequencies of a spectral object.

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

     trackfreq(specdata)

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

specdata: A spectral object 

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

     A vector of the frequencies at which the columns of a spectral
     matrix occur.

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

     Jonathan Harrington

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

     trackfreq(vowlax.dft.5)
     # Frequency components between 1000 and 2000 Hz
     trackfreq(vowlax.dft.5[,1000:2000])
     # All frequency components of a trackdata object except the d.c. offset
     trackfreq(fric.dft[,-1])
     # All frequency components except the d.c. offset
     # and except frequencies above 5000 Hz
     trackfreq(fric.dft[,-c(1, 5000:20000)])
     # Note the following syntax if the spectral object is a vector
     # Frequencies 1000-3000 Hz
     trackfreq(e.dft[1000:3000])

