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Journal : Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC)

Analisis Speaker Recognition Menggunakan Metode Dynamic Time Warping (DTW) Berbasis Matlab Prayoga, Noor Fita Indri; Astuti, Yenni; Waluyo, Catur Budi
AVITEC Vol 1, No 1 (2019): Agustus 2019
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (504.264 KB) | DOI: 10.28989/avitec.v1i1.492

Abstract

Voice is one of  way to communicate and express yourself. Speaker recognition is a process carried out by a device to recognize the speaker through the voice. This study designed a speaker recognition system that was able to identify speakers based on what was said by using dynamic time warping (DTW) method based in matlab. To design a speaker recognition system begins with the process of reference data and test data. Both processes have the same process, which starts with sound recording, preprocessing, and feature extraction. In this system, the Fast Fourier Transform (FFT) method is used to extract the features. The results of the feature extraction process from the two data will be compared using the DTW method. Calculations using DTW that produce the smallest value will be determined as the output. The test results show that the system can identify the voice with the best level of recognition accuracy of 90%, and the average recognition accuracy of 80%. The results were obtained from 50 tests, carried out by 5 people consisting of 3 men and 2 women, each speaker said a predetermined word
Simulasi Komunikasi Data Altitude dan Airspeed Pesawat pada ARINC 429 Menggunakan Visual Basic 2010 Express Krisna, Angga Leo Anggara; Astuti, Yenni; Dermawan, Denny
AVITEC Vol 1, No 1 (2019): Agustus 2019
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (834.147 KB) | DOI: 10.28989/avitec.v1i1.480

Abstract

Communication is the process of delivering information from a node to other nodes. In general, communication in the form of voice and data must be understood by both nodes. Flight data communication is used for pilots to collect information from the devices used. In this research, ARINC 429 data communication system is simulated using visual basic 2010 express. By using a GUI, the input data is obtained from the flight radarpro24 application. The data are representation of altitude and airspeed of Lion Air commercial flight JT922. The 32 bits of binary data are converted into decimal format. It was concluded that the altitude and airspeed data can be read and analyzed using this format.
Hand Gesture-Based Human-Computer Interaction using MediaPipe and OpenCV Putri, Risma Dwi Tjutarjo; Lasmadi, Lasmadi; Kusumaningrum, Anggraini; Nurdin, Riani; Astuti, Yenni
Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC) Vol 7, No 2 (2025): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v7i2.3132

Abstract

This study presents the design and implementation of a real-time hand gesture recognition system for directional movement using MediaPipe and OpenCV. The system aims to enhance Human-Computer Interaction (HCI) by recognizing four primary hand gestures—forward, backward, left, and right—based on real-time video input from a standard webcam. The proposed method extracts 21 hand landmarks using MediaPipe, then analyzes landmark displacement to determine the direction of movement. Experiments were conducted under three lighting conditions (bright, moderate, dim) and at three distances (200 cm, 300 cm, and 450 cm). Results show that the system achieved 100% recognition accuracy for all gestures at 200 cm. At 300 cm, accuracy slightly decreased, particularly for backward gestures (down to 77.5%). At 450 cm, performance dropped significantly, with accuracy for some gestures falling below 30%, especially under dim lighting. These findings demonstrate that the proposed system performs reliably at short to medium distances and is sensitive to lighting conditions and user proximity. This research contributes to the development of touchless interfaces for smart environments, presentations, and other interactive applications.