RESEARCH ARTICLE OPEN ACCESS A Survey: Classification Techniques

Clinical depression has become a leading cause of mental illness and also major cause of suicides and deaths. Thus, early detection of depression among the individuals will help to reduce the problems of mental illness and deaths. The signs of depressions can be studied by sampling the speech signals of the individuals. Depressive disorder affects the acoustic qualities of their speech; hence depression can be detected by analyzing the acoustic properties of speech by firstly pre-processing the speech signal and then features can be extracted and this speech is then classified by using classification techniques, as depressed or controlled. Keywords:- Clinical depression, depressive disorders, acoustic properties, pattern recognition, classification, depression detection. I