Phonocardiogram exercise test and cardiac function classification;

An Analysis of Precision and Accuracy of the Phonocardiogram Exercise Test;

Phonocardiogram contains a lot of information on the physiological and pathological cardiac function, so it can improve the diagnosis and treatment of cardiovascular disease to effectively diagnose cardiac sounds.

Sound is one of the important material in multi-media,in AuthorWare,sound icon can draw into the sound,but can not control them easily or some forms of the sound can not be drawn into directly,there are two ways: first,through the sound icon,second,by function or programming.

Objective: To determine whether spectral analysis of respiratory sounds-phonopneumography is a sensitive and valid method for bronchial provocation testing.

In order to detect the length of secret messages embedded by audio-to-image audio steganography,via researching distribution characteristic of wavelet coefficients histogram after audio-to-image transform the peak frequency feature which has linear relationship with the embedding capacity is extracted,and the linear regressive model is established.