Comparative Analysis of the Effectiveness of Spectral Gating and Wiener Filtering for Noise Reduction in Enhancing the Quality of Lampung Language Audio Recordings

DOI

10.2991/978-94-6463-730-4_12How to use a DOI?

Keywords

Noise Reduction; Spectral Gating; Wiener Filtering; Audio Recording; Lampung Language

Abstract

Lampung language, as one of the regional languages in Indonesia, has cultural and linguistic richness that is important to document and preserve, especially through quality audio documentation. One of the main problems in Lampung language audio recordings is background noise, which can reduce the clarity and quality of the recording. This research aims to analyze and compare the effectiveness of two noise reduction methods, which are Spectral Gating and Wiener Filtering, in improving the quality of Lampung language audio recordings. These methods use different approaches to handle noise. Spectral Gating focuses on removing dominant noise frequencies, while Wiener Filtering uses a statistical approach to minimize overall noise. This study used voice recordings of six respondents from different locations, ages, and genders, resulting in varied background noise levels. Audio quality was evaluated using the signal-to-noise ratio (SNR), which is usually expressed in decibels (dB). The higher the SNR value, the better the signal quality, as the signal is more dominant over the noise. Conversely, a lower SNR value indicates that the noise is more dominant over the signal. This research shows that Spectral Gating is more effective than Wiener Filtering in improving audio quality. These results provide valuable insight into the most effective noise reduction method for preserving recordings of local languages, particularly the Lampung language.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Rahmi Permata Hati
AU  - Akmal Junaidi
AU  - Aristoteles
AU  - Favorisen R. Lumbanraja
AU  - Tristiyanto
PY  - 2025
DA  - 2025/05/27
TI  - Comparative Analysis of the Effectiveness of Spectral Gating and Wiener Filtering for Noise Reduction in Enhancing the Quality of Lampung Language Audio Recordings
BT  - Proceedings of the 5th International Conference on Applied Sciences, Mathematics, and Informatics (ICASMI 2024)
PB  - Atlantis Press
SP  - 127
EP  - 138
SN  - 2352-541X
UR  - https://doi.org/10.2991/978-94-6463-730-4_12
DO  - 10.2991/978-94-6463-730-4_12
ID  - Hati2025
ER  -