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ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika
Published by Institut Teknologi Nasional Bandung
ISSN : 23388323     EISSN : 24599638     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering Engineering
Jurnal ELKOMIKA diterbitkan 3 (tiga) kali dalam satu tahun pada bulan Januari, Mei dan September. Jurnal ini berisi tulisan yang diangkat dari hasil penelitian dan kajian analisis di bidang ilmu pengetahuan dan teknologi, khususnya pada Teknik Energi Elektrik, Teknik Telekomunikasi, dan Teknik Elektronika.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 2, No 2: Published July - December 2014" : 6 Documents clear
Transformasi Pitch Suara Manusia Menggunakan Metode PSOLA BHASKORO, SUSETYO BAGAS; ARIANI, IRNA; ALAMSYAH, ANANDHA A.
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.129

Abstract

ABSTRAKKemampuan pengubahan suara yang dilakukan Dubber untuk beragam bentuk suara menjadi perhatian khusus dengan melakukan rekayasa suara, di dalam perkembangan teknologi di kenal sebuah teknikpitch shifting yang digunakan untuk mengubah suara manusia di bagian timbre dan pitch. Penelitian ini menggunakan metodepitch shifting PSOLA (Pitch Synchronous Overlap Add) untuk merubah pitch sekaligus timbre suara. Proses yang dilakukan meliputi perekaman suara sehingga didapatkan sinyal suara. Sinyal hasil perekaman kemudian diolah untuk menemukan posisi pitch dari sinyal pada domain waktu. Setelah posisi pitch diketahui, jarak antar pitch akan dikalikan dengan bilangan skala pergeseran yang sudah ditentukan. Hasil dari perkalian tersebut adalah perubahan pada pitch suara, sehingga menghasilkan suara yang lebih tinggi atau lebih rendah. Perubahan juga terjadi pada timbre sehingga menghasilkan karakter suara yang berbeda dengan suara aselinya.Hasil pengujian pitch dan timbre dengan menggunakan metode PSOLA menunjukkan keberhasilan mencapai 98% berdasarkan sinyal sinus.Kata kunci: Pitch, Timbre,Pitch Shifting, PSOLA.ABSTRACTThe ability of converts sound done in various forms of a dubber sound, becomes a special attention in doing an engineering design sound. In the development of technology the pitch of shifting know a technique that is used to turn the human voice in the timbre and  pitch. This study using methods  pitch  shifting psola (pitch synchronous overlap add) to change the pitch as well as the timbre sound. The process was about recording a sound so obtained up a noise. Recording signals then processed the results to find the position of the pitch signals on the domain of time. After the position of the pitch known, the distance between the pitch will be multiplied by the number of the scale of a shift that had been determined. The result of the multiplication of the sound is a change in pitch , so producing a higher or lower, Also happens to change the timbre that produces characters a different voice with the original sound. The examination result of pitch and timbre using PSOLA method shows the success as big as 98% for signal sinus examination.Keywords: Pitch, Timbre, Pitch Shifting, PSOLA.
Sonolog Test Sumur Minyak menggunakan Alat Total Well Management Echometer sebagai Well Analyzer Sumur di Pertamina EP Subang TARYANA, NANDANG
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.152

Abstract

ABSTRAK Metoda Sonolog Tes adalah metoda dengan menggunakan sifat refleksi gelombang bunyi, digunakan untuk analisa sumur. Metoda Sonolog Tes menggunakan alat Total Well Managemen (TWM) sebagai Well Analyzer yang digunakan untuk memperoleh data  keperluan analisa  performance sumur. Informasi tentang data sumur ini dapat diperoleh dengan menggunakan gas gun sebagai sumber gelombang bunyi yang ditembakan ke sumur. Hasil refleksi dari dalam sumur direkam dalam bentuk grafik yang direkam di komputer. Refleksi yang kuat (down kick) dari gelombang bunyi tercatat pada 14.827 detik yang mengindikasikan puncak cairan berada di kedalaman 9161.24 feet dari permukaan. Tekanan casing terukur sebesar 33.8 psig masih lebih rendah dibandingkan  tekanan pump intake hasil perhitungan sebesar 486 psig sehingga  tekanan casing tersebut tidak menggganggu produksi sumur. Analisa pantulan akustik tubing collar rata rata of 31.19 ft tiap tubing, dan kecepatan gelombang bunyi gas pada annulus sebesar 1236 ft/sec, dan dapat diketahui bahwa kecepatan gelombang gas di annulus berhubungan langsung dengan densitas gas. Aplikasi Well Analyzer dari Echometer pada Metoda Sonolog Tes, membantu melihat peluang peningkatan produksi lebih lanjut seperti dengan menganalisa tinggi puncak cairan pada sumur yang datanya terlihat di komputer.Kata kunci: Gelombang bunyi, acoustic, Sonolog Test, Total Well Management, Well Analyzer ABSTRACT Sonolog Test Method is a method using reflection properties of sound waves, is used for the analysis of the well. Sonolog Test Method using a Total Well Management (TWM) as Well Analyzer is used to obtain data for analysis of performance well. Information on well data can be obtained by using a gas gun as a source of sound waves that were fired into the well. Results reflection of the well recorded in the form of graphs recorded in the computer. Strong reflection (kick down) from the sound waves recorded on 14 827 seconds indicating fluid peak at a depth of 9161.24 feet from the surface. Casing pressure of 33.8 psig measured is lower than the pump intake pressure of 486 psig calculation results so that the casing pressure does not interfere with the production wells. Analysis of acoustic tubing collar reflection average of 31.19 ft each tubing, and a sound wave velocity of gas in the annulus of 1236 ft / sec, and it can be seen that the wave velocity in the annular gas directly related to the density of the gas. Well Analyzer of Echometer on Sonolog Test Method, helped see further opportunities to increase production as by analyzing the peak height of fluid in the well for which data is visible on the computer.Keywords: sound waves, acoustic, Sonolog Test, Total Well Management, Well Analyzer
Perancangan dan Analisis Redistribution Routing Protocol OSPF dan EIGRP ARYANTA, DWI; PRANATA, BAYU AGUNG
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.85

Abstract

ABSTRAKOSPF (Open Shortest Path First) dan EIGRP (Enhanced Interior Gateway Routing Protocol) adalah dua routing protokol yang banyak digunakan dalam jaringan komputer. Perbedaan karakteristik antar routing protokol menimbulkan masalah dalam pengiriman paket data. Teknik redistribution adalah solusi untuk melakukan komunikasi antar routing protokol. Dengan menggunakan software Cisco Packet Tracer 5.3 pada penelitian ini dibuat simulasi OSPF dan EIGRP yang dihubungkan oleh teknik redistribution, kemudian dibandingkan kualitasnya dengan single routing protokol EIGRP dan OSPF. Parameter pengujian dalam penelitian ini adalah nilai time delay dan trace route. Nilai trace route berdasarkan perhitungan langsung cost dan metric dibandingkan dengan hasil simulasi. Hasilnya dapat dilakukan proses redistribution OSPF dan EIGRP. Nilai delay redistribution lebih baik 1% dibanding OSPF dan 2-3% di bawah EIGRP tergantung kepadatan traffic. Dalam perhitungan trace route redistribution dilakukan 2 perhitungan, yaitu cost untuk area OSPF dan metric pada area EIGRP. Pengambilan jalur utama dan alternatif pengiriman paket berdasarkan nilai cost dan metric yang terkecil, hal ini terbukti berdasarkan perhitungan dan simulasi.Kata kunci: OSPF, EIGRP, Redistribution, Delay, Cost, Metric.ABSTRACTOSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol) are two routing protocols are widely used in computer networks. Differences between the characteristics of routing protocols pose a problem in the delivery of data packets. Redistribution technique is the solution for communication between routing protocols. By using the software Cisco Packet Tracer 5.3 in this study were made simulating OSPF and EIGRP redistribution linked by technique, then compared its quality with a single EIGRP and OSPF routing protocols. Testing parameters in this study is the value of the time delay and trace route. Value trace route based on direct calculation of cost and metric compared with the simulation results. The result can be OSPF and EIGRP redistribution process. Value delay redistribution 1% better than OSPF and EIGRP 2-3% under traffic density dependent. In calculating the trace route redistribution is done 2 calculations, the cost for OSPF area and the area of the EIGRP metric. Making primary and alternate paths based on the packet delivery rate and the cost of the smallest metric, it is proved by calculation and simulation.Keywords: OSPF, EIGRP, Redistribution, Delay, Cost, Metric.
Analisis Performansi Konektifitas Pada Jaringan Wireless Broadband di Bandung TONAPA, OTNIEL; RAHMIATI, PAULINE; KOMBA, DEBORA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.162

Abstract

ABSTRAKPerkembangan teknologi komunikasi Wireless mengarah ke teknologi yang berbasis jaringan IP (Internet Protocol). Access Point adalah suatu perangkat Wireless Router.  Access point membentuk hot spot, sedangkan Wireless Router mengatur lalu lintas data. Parameter yang diukur pada penelitian ini yaitu Quality of Service (QoS), antara lain pengukuran jitter, delay, dan packet loss yang dihasilkan dalam layanan paket data. Nilai jitter rata-rata sesama pengguna modem ADSL yang terhubung dengan access point pada smartphone bernilai 143.36 ms sedangkan pada laptop berada pada nilai 45.6 ms. Nilai jitter sesama penguna modem GPON, nilai rata-rata pada smartphone bernilai 133.12 ms, sedangkan pada laptop berada pada nilai 45.56 ms. Nilai rata-rata delay sesama pengguna modem ADSL pada smartphone bernilai 99.04 ms, sedangkan pada laptop sebesar 56.33 ms. Nilai rata-rata delay pada sesama pengguna modem GPON pada smartphone adalah 97.96 ms sedangkan pada laptop sebesar 56.15 ms.  Packet loss dari hasil pengujian keduanya memiliki presentase sama yaitu 1%.Kata kunci: Teknologi Digital Subscriber Line, Jaringan Optik Pasif, Dynamic Host Configuration Protocol (DHCP), Quality of Service (QoS)ABSTRACTWireless communication technology development leading to technologies that network-based IP (Internet Protocol). Access Point Wireless Router is a device. Access point forming a hot spot, while the router manage data traffic. Parameters measured in this research is Quality of Service (QoS). among other things, measuring jitter, delay, and packet loss. resulting in packet data service. Jitter value among ADSL fellow have the average on smartphones 143.36 ms. On laptop average be at 45.6 ms. While jitter value among GPON fellow user have the average on smartphone 133.12 ms. On laptop average be at 45.56 ms. The average value of the delay to ADSL fellow users on smartphones 99.04 ms and on laptop average be at 56.33 ms. While delay value among GPON fellow user have the average on smartphone 97.96 ms while on laptop average be 56.15 ms. Packet loss from the test results, both have the same percentage of 1%.Keywords: Asymmetric Digital Subscriber Line (ADSL), Gigabyte Passive Optical Network (GPON), Dynamic Host Configuration Protocol (DHCP), Quality of Service (QoS)
Simulasi Sinkronisasi Carrier pada Modulasi Digital menggunakan Matlab ARYANTA, DWI; DARLIS, ARSYAD RAMADHAN; FARHANI, WIRDA SRI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.100

Abstract

ABSTRAKDalam sistem komunikasi digital, salah satu manfaat teknik pengkodean adalah sebagai efisiensi bandwidth. Pada kanal komunikasi, adanya noise akan mengganggu dan  menurunkan kinerja sistem komunikasi digital. Hal ini menyebabkan terjadinya kesalahan pendeteksian sinyal pembawa, yang mengakibatkan terjadi perubahan bit atau simbol pada sisi penerima. Untuk mengurangi kesalahan deteksi, maka dibutuhkan suatu mekanisme sinkronisasi carrier di sisi penerima untuk mendapatkan data yang serupa dengan data yang dikirim. Simulasi sinkronisasi carrier pada penelitian ini menggunakan metode carrier phase recovery pada modulasi digital M-PSK dan M-QAM dengan level modulasi 4 sampai dengan 32, menggunakan software Matlab versi 7.9. Hasil pengujian sistem yang telah dilakukan pada Eb/No dengan rentang 0 hingga 30 dB menunjukkan, adanya peningkatan kinerja sistem pada modulasi M-PSK dari 0,01352 sampai dengan 0,8546, dan pada modulasi M-QAM dari 0,0256  sampai dengan 0,7867.Kata Kunci: M-PSK, M-QAM, Kanal AWGN, BER, Eb/No, Phase RecoveryABSTRACTThe digital communication systems, one of the benefits coding techniques are as bandwidth efficiency. The communication channel, the presence of noise will disrupt and degrade the performance of digital communication systems. This leads to error detection of the carrier, resulting in a change of bits or symbols at the receiver side. To reduce the detection error, there is a need carrier synchronization at the receiver side to obtain similar data with the data sent. Simulation of carrier synchronization in this study using the carrier phase recovery method in digital modulation M-PSK and M-QAM modulation with levels 4 to 32, using Matlab software version 7.9. The results of system testing has been done on the Eb / No ranging from 0 to 30 dB shows, an increase in the performance of the system on the M-PSK modulation from 0.01352 to 0.8546, and the M-QAM modulation from 0.0256 to 0 , 7867. Keywords: M-PSK, M-QAM, AWGN Channel, BER, Eb/No, Phase Recovery
Implementasi Counter Production Monitoring pada Mesin Tekstil berbasis Mikrokontroler RACHMAT, HENDI HANDIAN; ASRIL, HARIANDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 2, No 2: Published July - December 2014
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v2i2.115

Abstract

ABSTRAKSistem Counter Production Monitoring (CPM) diimplementasikan untuk menghitung secara otomotis kecepatan mesin, kecepatan produksi, dan jumlah produksi.Sistem ini digunakan pada mesin pemintal benang di industri tekstil untuk mengetahui efisiensi kerja mesin dan hasil produksi benang.Sistem terdiri dari perangkat keras dan lunak berbasis mikrokontroler dan personal komputer (PC) untuk mengukur putaran mesin guna menghitung ketiga besaran hasil produksi. Inductive proximity sensor dan encoder gear dipasang dengan jarak 1 mm pada shaft mesin yang berputar untuk mendeteksi jumlah putaran mesin berdasarkan jumlah pulsa yang dideteksi oleh sensor selama durasi tertentu. Mikrokontroller menghitung tiga besaran produksi dan menampilkan hasil pada display LCD melalui pengaturan 3 buah tombol serta mengirimkan ke PC melalui komunikasi serial untuk ditampilkan. Hasil pengujian selama 3 hari menunjukkan terjadi perbedaan antara sistem CPM dan perhitungan manual (Tachometer) yaitu antara 0.35-0.4 HANK.Perbedaan terjadi karena pada perhitungan manual, mesin diasumsikan selalu berjalan. Padahal pada kenyataannya terjadi proses dopping (penggantian cone benang). Dapat disimpulkan bahwa sistem CPM telah dapat digunakan untuk mengetahui efisiensi kerja mesin dan hasil produksi secara otomatis.Kata kunci: counter production monitoring, encoder gear, Inductive Proximity Sensor, mikrokontroler, personal komputer. ABSTRACTA Counter Production Monitoring (CPM) system was implemented to calculate automatically a machine speed, a production speed and a total production. This system was employed on a spinning machine in a textile industry to know machine efficiency and a number of thread productions. The system consists of some microcontroller-based hardware and software modules to detect machine rotation. Inductive proximity sensor and encoder gear were installed with a rotary machine shaft in 1 mm distance. A number of machine rotation was calculated from the number of pulses that detected by sensor for a certain time duration. Microcontroller calculated three production values and displayed on LCD by controlling three different push buttons. Subsequently, the data transferred to PC via serial communication to be displayed on PC. From three days testing, the system showed a different result of 0.35-0.4 HANK total production between CPM system and manual procedure using Tachometer. The different was due to the machine was assumed still working during dopping (change thread cone) process in the manual procedure. As a conclusion, CPM system can be used to know the machine efficiency and the number of thread production automatically.Keywords: counter production monitoring, encoder gear, Inductive Proximity Sensor, microcontroller, personal computer.

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