Sir, The recent paper by Trail et al. (Br Heart J 1982; 48: 78-80) provides interesting support for the valvular genesis of high frequency heart sounds. As was shown by Mills et al.,I we were able to record a diastolic heart sound simultaneously with echocardiographc mitral valve closure in a "normal" patient with congenital heart block. The intensity of such sounds, however, never reached the ...

In this survey paper, Heart sound has a greater requirement for the detection of heart disease. Now a day, recently extensive research has been applied for different feature selection and classification technique. According to this survey paper we deal with the most important feature for the detection of heart disease that is feature evaluation or ranking and feature selection. They are the mos...

Cardiovasculary diseases are affecting a constantly growing number of people. Due to this reason we are continously looking for new ways of investigations. The processing of the heart’s audio signals also belong to this category. Heart sound is an acoustic wave generated by the mechanical movement of the heart and blood. The sounds can be divided into normal heart sounds and heart murmurs. Murm...

THE importance of early detection of unrecognized heart disease in school children has been adequately emphasized and various technics of screening the school-age child have been suggested and attempted.'-6 Comparisons of results have been difficult because of a lack of true prevalence rates among the populations examined.1 2, 4, 7 Most recently a mass field trial of screening for heart disease...