The analysis of the glottal excitation in the case when phonation slides from breathy to normal has been studied in this paper. The performance of a developed analysis tool, the AIF-method, has been compared to the results given by the EGG-signal. The AIF-method yielded reliable glottal pulse forms for all the speech material that was studied. Even in the case of very breathy phonation the wave form given by the AIF-method was reliable whereas the information given by the EGG-analysis was not relevant. The correspondence between the EGG-signal and the result obtained by the AIF-method concerning the instant of closure and the maximum opening of the glottal cycle was evident.