Glottal flow characteristics in vowels produced by speakers with heart failure

Heart failure (HF) is one of the most life-threatening diseases globally. HF an under-diagnosed condition, and more screening tools are needed to detect it. A few recent studies have suggested that also affects functioning speech production mechanism by causing generation edema in vocal folds impairing lung function. It has not yet been studied whether these possible effects on large enough cause acoustically measurable differences distinguish produced from healthy speakers. Therefore, goal present study was compare between patients controls focusing excitation signal generated at level folds, glottal flow. The flow computed using quasi-closed phase inverse filtering method estimated parameterized with 12 parameters. sound pressure (SPL) measured as additional parameter. statistical analyses conducted parameters indicated SPL were significantly different controls. results showed generally a rounded pulse lower compared controls, indicating incomplete closure inappropriate leakage air through glottis. observed this preliminary indicate features capable distinguishing speakers suggests constitute potential feature extraction approach which should be taken into account future large-scale investigations studying automatic detection speech.