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All Journal IJECA (International Journal of Education and Curriculum Application) International Journal of Engineering, Science and Information Technology
Shobhi Al-Ghifari Azhary
Yogyakarta State University
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Analysis of Human Voice Spectrum based on Regional Accent in Vowels and Consonants Puspa Indah Devitasari; Benazir Amalia Firdausy; Shobhi Al-Ghifari Azhary; Heru Kuswanto
International Journal of Engineering, Science and Information Technology Vol 1, No 4 (2021)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (878.731 KB) | DOI: 10.52088/ijesty.v1i4.147

Abstract

This study aims to analyze the spectrum of the human voice based on the accents of several regions. This research is included in the type of experimental research. Data were collected from 4 male respondents aged 23 years as research subjects. Respondents come from Central Java, East Java, Jambi, and South Sulawesi or come from Javanese, Malay, and Bugis ethnicities. Each respondent pronounces the vowels /a/ and /e/ as well as the consonants /b/, /d/, and /g/ once in each sound under normal circumstances or does not have throat problems or other things that make the sound abnormal. Voice recording is done in a closed and quiet room without any disturbance by using a microphone connected to a laptop using the cool record edit pro application. The sound spectrum was analyzed using Praat verse 2 software, then the recording was converted to *wav format. Furthermore, the sound spectrum analysis procedure uses software to determine the shape of the spectrum, the maximum or minimum pitch frequency (F0), and the formant frequency of F1-F4 in each sample. The results showed that the response of men from South Sulawesi had the highest tone of 156 Hz in the letter /b/ and 145 Hz in the letters /d/ and /g/ respectively. while the lowest tone of voice owned by men from the Jambi area is 105 Hz, 109 Hz, and 102 Hz for each consonant and the output from F0 (pitch) to F1-F4 (formant) can change and does not describe the high pitch, meaning the formant will always high.
Development of Science E-Flipbook Integrated Illegal Sand Mining on River Basin to Improve Environmental Care Attitude Shobhi Al-Ghifari Azhary; I Gusti Putu Suryadarma; Puspa Indah Devitasari; Kuswanto Kuswanto
IJECA (International Journal of Education and Curriculum Application) Vol 3, No 1 (2020): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (30.493 KB) | DOI: 10.31764/ijeca.v3i1.2036

Abstract

The aim of this research is to produce a valid e-flipbook on science learning content for water pollution that integrated with illegal sand mining activities in a river basin to enhance environmental care attitude. The research method used was research and development with ADDIE models that are limited to the developing stage. The research sample consisted of 20 seventh grade students of junior high school. The average validation resulted by media expert is 3,5 and content expert is 3,6 with very good category, the result of validation by science teacher is on average 3,6 with very good category and peer reviewer obtained an average value of 3,7 with very good category, the results of validation by 20 students obtained an average value of 3,7 with very good categories. Research data were analyzed and interpreted using descriptive analysis. Based on the results of development and validation, this e-flipbook can be concluded valid and can be applied in learning. This research is important because it uses technology and raises issues about environmental problems
Co-Authors Benazir Amalia Firdausy Heru Kuswanto I Gusti Putu Suryadarma Kuswanto Kuswanto Puspa Indah Devitasari