This time development of electronic growing fast. This field can join with another field especially ini medical which is many people called electromedic. A dissease have much in our country one of it is asma. For this final project we made Analisa Suara pada Penyempitan Saluran Pernapasan untuk Mendeteksi Penyakit Asma dengan Metode Jaringan Syaraf Tiruan so it can be detected that the object has asma or not. This device using stethoscope connected to pre amplifier and amplifier that its following in to PC via mono jack audio, voice which is resulted compose using Visual Basic. A signal come from Visual Basic it will be composed using three methods, which is Hamming Window method, FFT (Fast Fourier Transform) method and Neural Network Backpropagation method. This data can show system detected dissease of the person have asma or not (normal). Trial data from asma patient got score range in frequency 30 Hz and for normal patient up to 30 Hz. The result from many datas have 80 percent of acuration. Keyword: Neural Network, Fast Fourier Transform, Hamming Windo
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