Medidas espectrais/cepstrais em mulheres com disfonia comportamental

Abstract

Objective: To investigate whether there are differences in cepstral and spectral acoustic measures between women with behavioral dysphonia with and without laryngeal injury, as well as to verify whether there is a correlation between such measures and the auditory-perceptual judgment of vocal quality. Method: 78 women with behavioral dysphonia without laryngeal lesion (DCSL) and 68 with behavioral dysphonia with laryngeal lesion (vocal nodules) (DCCL) participated. The measures CPP (cepstral peak prominence), CPPS (cepstral peak prominence smoothed), spectral decline and H1-H2 (difference between the amplitude of the first and second harmonics) were extracted, as well as the auditory-perceptual judgment (JPA) of the degree general vocal deviation (GG), roughness (GR), breathiness (GS) and tension (GT) degrees. Results: Women with DCCL had higher values of H1-H2, as well as lower values in CPP and CPPS compared to women with DCSL. The most deviant voices had lower CPP and CPPS values. The breathy voices had lower values of CPP and CPPS, as well as a higher value of H1-H2 in relation to rough voices. There was a weak negative correlation between the CPP and the GR, a moderate negative correlation with the GG and a strong negative correlation with the GS. The CPPS showed a moderate negative correlation with the GG, GR and GS. The H1-H2 measure showed a weak positive correlation with the GS. There was a weak positive correlation between spectral decline and GT. Conclusion: The acoustic measures H1-H2, CPP and CPPS show differences between women with DCSL and DCCL. Furthermore, there is a correlation between the cepstral and spectral measurements and the different JPA parameters.