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All Journal JOIN (Jurnal Online Informatika) Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Djtechno: Jurnal Teknologi Informasi Jurnal Ilmiah Sistem Informasi
Helmy Dzulfikar
Program Studi Sistem Informasi, Universitas Siliwangi, Tasikmalaya, Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Social Sciences

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The Comparison of Audio Analysis Using Audio Forensic Technique and Mel Frequency Cepstral Coefficient Method (MFCC) as the Requirement of Digital Evidence Helmy Dzulfikar; Sisdarmanto Adinandra; Erika Ramadhani
JOIN (Jurnal Online Informatika) Vol 6 No 2 (2021)
Publisher : Department of Informatics, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/join.v6i2.702

Abstract

Audio forensics is the application of science and scientific methods in handling digital evidence in the form of audio. In this regard, the audio supports the disclosure of various criminal cases and reveals the necessary information needed in the trial process. So far, research related to audio forensics is more on human voices that are recorded directly, either by using a voice recorder or voice recordings on smartphones, which are available on Google Play services or iOS Store. This study compares the analysis of live voices (human voices) with artificial voices on Google Voice and other artificial voices. This study implements the audio forensic analysis, which involves pitch, formant, and spectrogram as the parameters. Besides, it also analyses the data by using feature extraction using the Mel Frequency Cepstral Coefficient (MFCC) method, the Dynamic Time Warping (DTW) method, and applying the K-Nearest Neighbor (KNN) algorithm. The previously made live voice recording and artificial voice are then cut into words. Then, it tests the chunk from the voice recording. The testing of audio forensic techniques with the Praat application obtained similar words between live and artificial voices and provided 40,74% accuracy of information. While the testing by using the MFCC, DTW, KNN methods with the built systems by using Matlab, obtained similar word information between live voice and artificial voice with an accuracy of 33.33%.
IoT Application in a Vision-Based Security System at the At-Taqwa Mosque in Cijulang Nurul Hiron; Rian Nurdiansyah; M.Aris Risnandar; Andri Ulus R; Helmy Dzulfikar; Aldy Putra Aldya
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 8 No. 1 (2025): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v8i1.5564

Abstract

The use of Internet of Things (IoT) technology has become a trend in various areas of life. In the context of security and monitoring, IoT applications can provide innovative solutions to improve monitoring and protection. This community service program aims to apply the IoT concept in a vision-based security system at the At-Taqwa Cijulang Mosque. Through the integration of sensors and vision devices connected to an IoT network, this program proposes a more effective and efficient solution for monitoring mosque security. Motion and presence sensors will be installed to detect suspicious activity and manage the environment within the mosque. The vision-based security system will use cameras connected to an IoT network to monitor and identify people and activities occurring in the mosque area. In addition, a mobile application will be developed to provide real-time monitoring access to mosque administrators and the local community. The results of the service showed increased security in the environment around the mosque as well as increased awareness of security in the community around the At-Taqwa Cijulang Mosque.
The Comparison of Audio Analysis Using Audio Forensic Technique and Mel Frequency Cepstral Coefficient Method (MFCC) as the Requirement of Digital Evidence Dzulfikar, Helmy; Adinandra, Sisdarmanto; Ramadhani, Erika
JOIN (Jurnal Online Informatika) Vol 6 No 2 (2021)
Publisher : Department of Informatics, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/join.v6i2.702

Abstract

Audio forensics is the application of science and scientific methods in handling digital evidence in the form of audio. In this regard, the audio supports the disclosure of various criminal cases and reveals the necessary information needed in the trial process. So far, research related to audio forensics is more on human voices that are recorded directly, either by using a voice recorder or voice recordings on smartphones, which are available on Google Play services or iOS Store. This study compares the analysis of live voices (human voices) with artificial voices on Google Voice and other artificial voices. This study implements the audio forensic analysis, which involves pitch, formant, and spectrogram as the parameters. Besides, it also analyses the data by using feature extraction using the Mel Frequency Cepstral Coefficient (MFCC) method, the Dynamic Time Warping (DTW) method, and applying the K-Nearest Neighbor (KNN) algorithm. The previously made live voice recording and artificial voice are then cut into words. Then, it tests the chunk from the voice recording. The testing of audio forensic techniques with the Praat application obtained similar words between live and artificial voices and provided 40,74% accuracy of information. While the testing by using the MFCC, DTW, KNN methods with the built systems by using Matlab, obtained similar word information between live voice and artificial voice with an accuracy of 33.33%.
EVALUASI MANAJEMEN SIMPUS DAN RMIK ONLINE MENGGUNAKAN FRAMEWORK COBIT 2019 DAN HOT-FIT (STUDI KASUS: PUSKESMAS SANGKALI TASIKMALAYA) Fadillah, Najwa; Fahreza, Aditya Restu; Adriansyah, Muhammad Rehan; Sakhi, Syaefulloh Umar; Dzulfikar, Helmy
Djtechno: Jurnal Teknologi Informasi Vol 6, No 3 (2025): Desember
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/djtechno.v6i3.8022

Abstract

Penelitian ini bertujuan untuk menghasilkan manajemen Sistem Informasi Puskesmas (SIMPUS) dan RMIK Online di Puskesmas Sangkali Tasikmalaya menggunakan kerangka COBIT 2019 dan model HOT-Fit. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data melalui wawancara, observasi, dan studi dokumentasi. Evaluasi SIMPUS fokus pada domain DSS01- DSS05 COBIT 2019, yang menunjukkan tingkat kematangan tata kelola TI berada pada level 3 (Terkelola dan Terukur). Hasil ini menunjukkan proses operasional telah berjalan stabil dan terkelola, namun belum optimal, terutama pada aspek pencatatan, evaluasi berkala, dan perencanaan kemiskinan layanan. Sementara itu, evaluasi RMIK Online dengan model HOT-Fit menunjukkan tingkat keseimbangan yang tinggi pada aspek manusia, organisasi, teknologi, dan manfaat (net manfaat), meskipun masih diperlukan peningkatan dukungan teknis dan evaluasi rutin. Secara keseluruhan, implementasi sistem informasi telah memberikan dampak positif terhadap efisiensi dan kualitas pelayanan. Penelitian ini Kesimpulannya diperlukan upaya perbaikan berkelanjutan, baik dari sisi teknis maupun manajerial, untuk mencapai tata kelola TI yang lebih matang dan sistem yang terintegrasi penuh.
Evaluasi Kematangan dan Kualitas Layanan SIAKAD Berbasis ITIL V4 di IALM Tazudin, Muhamad Ikhsan; Saomi, Fakhri; Noer, Hyuga Ramadhan; Adawiyah, Siti Fauziah; Dzulfikar, Helmy
Jurnal Ilmiah Sistem Informasi Vol. 5 No. 1 (2026): January: Jurnal Ilmiah Sistem Informasi
Publisher : LPPM Universitas Sains dan Teknologi Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/p1204v49

Abstract

Institut Agama Islam Latifah Mubarokiyah (IAILM) Pondok Pesantren Suryalaya telah memanfaatkan Sistem Informasi Akademik (SIAKAD) untuk mendukung kegiatan administrasi dan akademik di kampus. Namun, hasil observasi dan wawancara menunjukkan bahwa masih ada berbagai kendala, seperti lambatnya akses sistem pada jam sibuk, kesalahan dalam input data, serta kurangnya tindak lanjut terhadap keluhan pengguna. Penelitian ini bertujuan untuk mengevaluasi tingkat kematangan dan kualitas layanan SIAKAD di IAILM dengan menggunakan kerangka kerja ITIL versi 4, yang berfokus pada dua domain utama, yaitu Manajemen Insiden dan Peningkatan Berkelanjutan. Metode yang digunakan adalah mixed-methods, yang menggabungkan pendekatan kualitatif melalui wawancara dan observasi dengan pendekatan kuantitatif menggunakan kuesioner kepada 35 responden, yang kemudian dianalisis menggunakan SPSS. Hasil penelitian menunjukkan bahwa tingkat kematangan SIAKAD berada pada Level 3 (Defined) dengan nilai rata-rata 2,83, yang berarti proses telah berjalan cukup baik namun belum sepenuhnya terdokumentasi dan distandarisasi. Analisis kesenjangan (gap analysis) menunjukkan selisih 1,17 poin antara kondisi aktual dan ideal, yang mengindikasikan perlunya peningkatan pada aspek dokumentasi, pemantauan, dan konsistensi penerapan layanan. Temuan ini memberikan kontribusi praktis berupa rekomendasi peningkatan sistem serta kontribusi teoritis dalam pengembangan evaluasi layanan teknologi informasi berbasis ITIL di lingkungan pendidikan tinggi. Dengan demikian, hasil penelitian diharapkan dapat menjadi dasar pengembangan tata kelola layanan akademik yang lebih efektif, efisien, dan berkelanjutan.
Co-Authors Adawiyah, Siti Fauziah Adriansyah, Muhammad Rehan Aldy Putra Aldya Andri Ulus R Erika Ramadhani Fadillah, Najwa Fahreza, Aditya Restu M.Aris Risnandar Noer, Hyuga Ramadhan Nurul Hiron Ramadhani, Erika Rian Nurdiansyah Sakhi, Syaefulloh Umar Saomi, Fakhri Sisdarmanto Adinandra, Sisdarmanto Tazudin, Muhamad Ikhsan