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All Journal International Journal of Informatics and Communication Technology (IJ-ICT) Dinamika Informatika: Jurnal Ilmiah Teknologi Informasi
Budi Utomo, Didi Susilo
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Computer Science & IT

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ANALISA CIRI GENDER BERDASARKAN TIME DOMAIN AUDIO FEATURE Purwadi, Hari; Budi Utomo, Didi Susilo; Wijiansyah, Agusma; Yuliana, Tatik
Dinamika Informatika : Jurnal Ilmiah Teknologi Informasi Vol 15 No 2 (2023)
Publisher : Fakultas Teknologi Informasi Universitas Stikubank (Unisbank) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35315/informatika.v15i2.9618

Abstract

Sistem pengenalan pola merupakan komponen penting dalam proses peniruan kemampuan inderawi manusia terutama penglihatan dan pendengaran. dalam meniru indera pendengaran manusia, komputer harus mempunyai suatu mekanisme standar dan logis dalam mengenali pola yang ada pada suara yang sedang diproses.konsep sederhana untuk mengenali pola dari suara sehingga dapat diidentifikasi dengan baik oleh computer [1]. Zero Crossing Rate merupakan Sempel berurutan pada sebuah signal digital memiliki perbedaan tanda, ukuran dari noise sebuah sinyal pada fitur domain. Sort Time Enegy merupakan Enegy menandakan kekerasan suara pada waktu yang pendek. Entropy merupakan Entropi adalah pemerosesan sinyal digital untuk mengkarakterisasi spectrum audio. Rerata wanita ZCR : 7366.4, STE: 0.0322, Entropy: 8.6222. Rerata pria ZSC: 6012.2, STE: 0.025, Entropy: 8.2924. Pada hasil rata-rata, nilai ciri suara ZCR tertinggi adalah 8615, dan ciri suara ZCR Terendah adalah 4266. nilai ciri suara STE tertinggi adalah 0.064, dan ciri suara STE Terendah adalah 0.013. nilai ciri suara Entropy tertinggi adalah 9.906, dan ciri suara Entropy Terendah adalah 8.135.
One time pad for enhanced steganographic security using least significant bit with spiral pattern Rihartanto, Rihartanto; Budi Utomo, Didi Susilo; Rizal, Ansar; Diartono, Dwi Agus; Februariyanti, Herny
International Journal of Informatics and Communication Technology (IJ-ICT) Vol 13, No 2: August 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijict.v13i2.pp168-177

Abstract

Data is an important commodity in today’s digital era. Therefore, data needs to get adequate security to prevent misuse. A common data security practice in the transmission of information is cryptography. Another approach is steganography, which hides secret messages in other media that are not confidential and can be accessed by the public. In this study, the spiral pattern is used for data placement using the least significant bit (LSB) method. Modifications were made to the 2-bits LSB to increase the data capacity that can be hidden. In order to increase security, the data is first converted into a datastream using random numbers as one time pad (OTP). exclusive-OR (XOR) operation is performed on datastream and OTP to get encrypted data to be hidden. The results showed that the image quality of the steganography results at a capacity close to 100% was still fairly good, as indicated by a peak signal-to-noise ratio (PSNR) value greater than 46 dB. Visually, the steganographic image does not look different from the original one. Likewise, the use of random numbers as OTP succeeded in changing the hidden data significantly, as indicated by the avalanche effect value above 50%.
Co-Authors Dwi Agus Diartono Hari Purwadi, Hari Herny Februariyanti Rihartanto, Rihartanto Rizal, Ansar Wijiansyah, Agusma Yuliana, Tatik