How can I write a program that input five words then display it on the screen ?
I am building a digital stethoscope as a part of final year project . We acquire the heart beat through diaphragm and and after amplifying it , the signal is fed to the sound card of laptop through the 3.5 mm jack . The signal is then processed in MATLAB and then displayed on the screen . The problem I encountered was the input signal to the sound card is too noisy . Ambient noise is preventing the accurate acquisition . How to filter out the noise ?