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Analysis of MP3 Bitrate on the Accuracy of Academic Audio Transcription Using Whisper large-v3 Selta Jaya Putra; Wijaya, Ardi; Alam, RG. Guntur
Jurnal Sistem Cerdas Vol. 8 No. 2 (2025): August
Publisher : APIC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37396/jsc.v8i2.528

Abstract

In the digital era, automatic transcription is a crucial solution for converting audio content into text, especially in the context of academic documentation. The main challenge in this process is transcription accuracy, which can be affected by the quality of the audio file, including its bitrate and file size. This study aims to analyze the impact of MP3 bitrate and file size on transcription accuracy using the Whisper large-v3 model. Five academic audio files were converted into five different bitrate levels, ranging from 64 kbps to 320 kbps, and then transcribed automatically using the Whisper model. Evaluation was conducted by calculating the Word Error Rate (WER) as an indicator of transcription accuracy. In addition, processing time and file size were recorded to analyze transcription efficiency. The results show that increasing bitrate does not always lead to higher accuracy. Bitrates of 128–192 kbps provided the best balance between transcription accuracy, processing efficiency, and file size. This study makes a significant contribution to the development of automatic transcription systems based on ASR models, particularly for audio documentation needs in educational institutions. These findings serve as a technical reference for developing efficient and accurate audio documentation systems in academic environments.
Co-Authors Abdul Syukur Abdullah, Dedy Ade Ferdiansyani Agus Setiawan Agustio, Faidillah Alam, RG.Guntur Alamsyah, Malik Fajar Alfarrizi, Jhodie Andilala Anggara, Muhammad Andre Aprianti, Zalia Apridiansyah, Yovi Ardiansyah, Adidi Muhammad Ardoni, Yoan Ariestanto, Dian Arif Setiawan Avida, Meny Dandi Sunardi Darnita, Yulia David Maria Vironika, Nuri Della, Della Rahma Dita, Willia Cahaya Fadli, Rengga Fadlikal Ilham Aditma, Afredo Febitri, Nora Febriani, Lovi Feni, Rita Fernando, Jerry Franata, Heru Gunawan Gunawan Guntur Alam Gustomi, Aldi Hariani, Merti Sri Hendri Wibowo, Sastya hidayah, agung kharisma Hidayat, Muhammad Husni Ikhlasul, Ridho Imanullah, Muhammad Janati, Iffah zafira Juhardi , Ujang Juhardi, Ujang Juliza, Sita Khairullah, Khairullah Kharisma , Agung Kirman Kirman, Kirman Kontesa, Ronaldo Kornengsih, Resnita Kurniawan, Edo marhalim, marhalim Maulana, M Fiqri Mawarni, Shindy Meyzera, Anes Muhammad Danil, Muhammad Mulyadi, Maheran Muntahanah, Muntahanah Mutiara Hikmah Nandika, Arjun Putra Nur'aini, Nur'aini Nurhayati Nurhayati Pahriza, Pahriza Pahrizal Pahrizal, Pahrizal Pirdaus, M Sapta Putra, Muhammad Ardiansah Putra, OJi Herwanda Putra, Riky Ade Putri, Dinda Raffles, Richard Rahmat, Deki Ramadhan, Arya Gilang Rasyid, Muhammad Soelaiman Renaldi Renaldi Rifqo, Muhammad Husni Rohman, Mohammad Abkar Nur Rosalina Rosalina Rozali Toyib Safitri Safitri Sahputra, Eka Selta Jaya Putra Sonita , Anisya Sonita, Anisya Sulaini, Soneta Supriatin Supriatin, Supriatin Surya Ade Saputera Tamara, Vivin Thiara, Rekhi Toyib, Rozali Umasih Umasih Veronica, Nuri David Maria Veronika, Nuri David Maria Waluyo Witriyono, Harry Yawahar, Jon Yuda, Azildjian Arma Yulia Darmi yuliadarnita, yuliadarnita Yuza Reswan