Judul: Pengembangan Model Jaringan Syaraf Tiruan Resilient Backpropagation untuk Identifikasi Chord Gitar
Abstrak: Penelitian ini mengembangkan pengenalan suara untuk mengidentifikasi chord gitar menggunakan metode jaringan syaraf tiruan resilient backpropagation sebagai metode pengenalan pola dan MFCC sebagai metode ekstraksi ciri. Tujuan penelitian ini adalah menemukan parameter-parameter yang dapat menghasilkan akurasi tertinggi. Parameter yang digunakan dalam proses pengenalan pola resilient backpropagation, yaitu hidden neuron, toleransi galat, learning rate, faktor naik, faktor turun, delta0, dan deltamax. Sedangkan parameter yang digunakan untuk proses MFCC adalah sampling rate, time frame, overlap, dan jumlah cepstral coefficient. Total data suara chord yang digunakan pada penelitian ini sebanyak 8 640 yang diperoleh dari 24 chord. Berdasarkan hasil penelitian yang telah dilakukan, akurasi tertinggi sebesar 95.56% diperoleh dengan menggunakan hidden neuron 100, jumlah koefisien cepstral 52, overlap 0.4, dan time frame 100 ms.
Keyword: chord, jaringan syaraf tiruan resilient backpropagation, mel frequency cepstral coefficients (MFCC).

Judul: Pengenalan Chord pada Gitar dengan MFCC Sebagai Metode Ekstraksi Ciri dan Jaringan Saraf Tiruan Sebagai Metode Pengenalan Pola
Abstrak: Human hearing system is capable of identifying sounds or audio signals, especially sounds that are familiar in their daily lives. However, recognizing chord sequences played in some kind of music is not an easy task. People need big effort to train their sense of hearing so that they can recognize chords. This condition is also valid for a computer system. Finding the key and labeling the chords automatically from music are of great use for those who want to do harmonic analysis of music. This research is about to recognize chords played and recorded by a guitar instrument. There are 24 chords used in this research. MFCC was used as a feature extraction using 13 and 26 cepstral coefficients. Each chord signal which has been extracted is modeled using artificial neural networks as a method of pattern recognition. This research results in an accuracy level above 90%. From the research that has been done, it can be concluded that modeling using back propagation neural networks on guitar chords recognition has an accuracy of 92%, better than the codebook method performed in the previous research which resulted in an accuracy of 88%. An increasing accuracy level is shown by using artificial neural networks for pattern recognition
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Judul: The Effect Cassava Leaves Meal in The Diets on Body Weigbt, Percentage of Digestive Tract and Viscera of Mule Duck.
Abstrak: The mule ducks are the crossbreed between common duck females (Anas plathyrhynchos) and muscovy ducks (Cairino moschata) to improve the meat production in order to meet the animal protein requirement of the people. One of the problems in husbandry farming is highly feed cost. This problem can be solved with using highly available local sources and cheapness. Cassava leaves (Manihot esculenta Crantz) is the one local sources which can be used as an alternative feed, because it contains a rather high protein (24.1%) aud vitamin A (10,000-13,000 IU). A highly Hydrocyanide (HCN) as well as crude fiber in the cassava leaves are the limiting factors to be used as poultry diet. The ducks have more ability in digest the crude fiber than chicken. So that, using some cassava leaves in the diet does not make any problem.
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