RETRACTED CHAPTER: Coronary Heart Disease Detection from Variation of Speech and Voice

A large percentage of ailment related death today is attributed to coronary heart disease (CHD). Due to lack of physical activity, life style, and increased stress level, heart disease are common now-a-days. Complications in the heart affect the larynx, breathing process and consequently the quality of speech. This work is primarily aimed to understand the variation of voice in the coronary heart disease patients for detection of CHD. Computerized Speech Lab (CSL) model 4500 is used for processing the voice signal. CSL contains Multi-Dimensional Voice Program (MDVP) that breaks down and shows up to 22 voice parameters from a voice test. Voice samples of a group of 100 coronary heart disease patients (males and females) are compared with that of a group of 100 normal people (males and females). The study reveals variations in voice parameters like spectrogram, long term average spectrum (LTAS), jitter, shimmer, amplitude perturbation quotient (APQ) of the coronary heart disease patients in comparison with the normal people.