Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing
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...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/144040 |
| _version_ | 1811685766332416000 |
|---|---|
| author | Williams, Ross Adrian Perttu, Anna Taisne, Benoit |
| author2 | School of Art, Design and Media |
| author_facet | School of Art, Design and Media Williams, Ross Adrian Perttu, Anna Taisne, Benoit |
| author_sort | Williams, Ross Adrian |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:49:44Z |
| format | Journal Article |
| id | ntu-10356/144040 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:49:44Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1440402023-03-21T05:48:31Z Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing Williams, Ross Adrian Perttu, Anna Taisne, Benoit School of Art, Design and Media Asian School of the Environment Earth Observatory of Singapore Science Volcano Infrasound Infrasound Spectral Subtraction 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. Ministry of Education (MOE) National Research Foundation (NRF) Published version This research is supported by the National Research Foundation Singapore and the Singapore. Ministry of Education, Academic Research Fund Tier 1 RG100/16. This work comprises Earth Observatory of Singapore contribution no. 310. This research is partly supported by the National Research Foundation Singa- pore and the Singapore Ministry of Education under the Research Centres of Excellence initiative. 2020-10-09T06:23:34Z 2020-10-09T06:23:34Z 2020 Journal Article 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 2196-4092 https://hdl.handle.net/10356/144040 10.1186/s40562-020-00158-4 7 en RG100/16 Geoscience Letters 10.21979/N9/NK6RRX © 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 http://creativecommons.org/licen ses/by/4.0/. application/pdf |
| spellingShingle | Science Volcano Infrasound Infrasound Spectral Subtraction Williams, Ross Adrian Perttu, Anna Taisne, Benoit Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title | Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title_full | Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title_fullStr | Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title_full_unstemmed | Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title_short | Processing of volcano infrasound using film sound audio post-production techniques to improve signal detection via array processing |
| title_sort | processing of volcano infrasound using film sound audio post production techniques to improve signal detection via array processing |
| topic | Science Volcano Infrasound Infrasound Spectral Subtraction |
| url | https://hdl.handle.net/10356/144040 |
| work_keys_str_mv | AT williamsrossadrian processingofvolcanoinfrasoundusingfilmsoundaudiopostproductiontechniquestoimprovesignaldetectionviaarrayprocessing AT perttuanna processingofvolcanoinfrasoundusingfilmsoundaudiopostproductiontechniquestoimprovesignaldetectionviaarrayprocessing AT taisnebenoit processingofvolcanoinfrasoundusingfilmsoundaudiopostproductiontechniquestoimprovesignaldetectionviaarrayprocessing |