PENAPISAN BUTTERWORTH BAND PASS DAN ALIH RAGAM WAVELET PADA AKUISISI ISYARAT SUARA PARU ANAK DAN DEWASA

• Main Authors: , DYAH TITISARI, , Dr. Indah Soesanti, S.T., M.T.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/127871/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=68179
• Institution: Universitas Gadjah Mada

is Auscultation ing a technique or method that most often us by medical check up personal in the beginning It of the patient. in body is listening the sounds by using is a stetoscope. The lung sounds that can be hear with modified stethoscope still mixed with other sound, especially the heart It sound. be cause during the human live, is located heart never stop breathing and the organ of the lungs with near the heart organ. In this research, will be design and realized a stethoscope that has been would modified with the addition of mic condenser, inverting amplifier, HPF and LPF circuit, and power amplifier circuit taken from be connected to the jack on computer soundcard to be processed. The subject data was adults the children and eft respectively the grating on bronchovesicular area, in the l T chest. conducted his research was reduce by one filtered Butterworth Band Pass and Wavelet Transform with the aim to noise, especially heart sound that entered during By the recording of the lung sound. we can obtained design filter was made, of the value the influence SNR and MSE to know design to of filter improvement the signal to and analyzed the influence of the orde on the performance. In addition, from the results of coefisien the value can be used as an initial feature extraction lung sounds in children and adults . Based on the results of the design Butterworth Band Pass Filter and Wavelet Transform is able to reduce the heart sound from the recording of the lung in children sounds is with the best 4 in orde th t , wi t h minimum he 6 maximum 00 Hz and 10 00 is Hz. The value SNR 40 9051 , is dB and MSE 3 47x10 , 6 - n . I adults is in orde 6 th with the minimum 400 Hz and maximum 800 Hz with the SNR value is 26 1333 , and dB is MSE value 2 05 , x10 4 - The . result in best Wavelet is Transform by us th ing Deubhechies 3 in detail 3 . The subjective analysis from respondens, best the sound results is Butterworth .