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Title: Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing
Authors: Williams, Ross Adrian
Perttu, Anna
Taisne, Benoit
Keywords: Science
Issue Date: 2020
Source: Williams, R.A., Perttu, A. & Taisne, B. (2020). Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing. Geoscience Letters, 7. doi:10.1186/s40562-020-00158-4
Project: RG100/16
Journal: Geoscience Letters
Abstract: The use of infrasound for the early detection of volcanic events has been shown to be effective over large distances, and unlike visual methods, is not weather dependent. Signals recorded via an infrasound array often have a poor signal to noise ratio, as other sources of infrasound are detected and recorded along with the volcano infrasound. Array processing software does not always detect known volcanic events, in part because of the amount of noise in the infrasound signal. Infrasound monitoring for atmospheric stud- ies: challenges in middle. Resampling the infrasound into the audible range and then applying the acoustic noise reduction techniques of spectral subtraction prior to array processing is shown to improve signal detection of volcanic events. The discussed technique is applicable to any infrasound signal such as infrasound from anthropogenic sources like nuclear testing.
ISSN: 2196-4092
DOI: 10.1186/s40562-020-00158-4
DOI (Related Dataset): 10.21979/N9/NK6RRX.
Rights: © 2020 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit ses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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