Generate an asymmetric pseudo-Voigt resonance in the frequency domain.

Method is described in detail by Stancik AL and Brauns EB: "A simple asymmetric lineshape for fitting infrared absorption spectra." Vib Spectrosc. 2008; 47: 66-69.

Usage

sim_asy_pvoigt(
  freq = 0,
  fwhm = 0,
  lg = 0,
  asy = 0,
  acq_paras = def_acq_paras(),
  gen_im_pts = FALSE
)

Arguments

freq

resonance frequency in ppm.

fwhm

resonance FWHM in Hz.

lg

Lorentz-Gauss lineshape parameter (between 0 and 1).

asy

asymmetry parameter.

acq_paras

list of acquisition parameters. See def_acq_paras

gen_im_pts

option to generate imaginary data points, defaults to FALSE.