Interpolation of scheduled simulation results for real-time auralization of moving sources
A central part of auralization is the consideration of realistic sound propagation effects. This can be achieved using computationally efficient physics-based simulations based on the principle geometrical acoustics. When considering complex effects, e.g. curved propagation due to atmospheric refrac...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
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| Series: | Acta Acustica |
| Subjects: | |
| Online Access: | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2024/01/aacus230100/aacus230100.html |
| _version_ | 1827344714026713088 |
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| author | Schäfer Philipp Fatela João Vorländer Michael |
| author_facet | Schäfer Philipp Fatela João Vorländer Michael |
| author_sort | Schäfer Philipp |
| collection | DOAJ |
| description | A central part of auralization is the consideration of realistic sound propagation effects. This can be achieved using computationally efficient physics-based simulations based on the principle geometrical acoustics. When considering complex effects, e.g. curved propagation due to atmospheric refraction, those simulations can be computationally demanding. This can become the bottleneck for real-time auralizations, as the run-time exceeds the duration of one audio block even for large block sizes. A solution is to schedule the simulations into a separate thread. However, this leads to an irregular update rate which is lower than the rate of the audio blocks. Consequently, the output signal can contain audible artifacts. This especially holds when considering the Doppler effect for dynamic scenarios with fast moving sources, like aircraft. This paper introduces a method for interpolating, and thereby upsampling, the results of scheduled simulations in an auralization context in order to avoid such artifacts. The method is applied to an aircraft flyover auralization considering curved sound propagation in an inhomogeneous, moving atmosphere. Using this method, it is possible to auralize such scenarios in real time. |
| first_indexed | 2024-03-07T22:51:05Z |
| format | Article |
| id | doaj.art-0cd2da1db8eb4369a3231a0c05cf5951 |
| institution | Directory Open Access Journal |
| issn | 2681-4617 |
| language | English |
| last_indexed | 2024-03-07T22:51:05Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Acta Acustica |
| spelling | doaj.art-0cd2da1db8eb4369a3231a0c05cf59512024-02-23T10:16:10ZengEDP SciencesActa Acustica2681-46172024-01-018910.1051/aacus/2023070aacus230100Interpolation of scheduled simulation results for real-time auralization of moving sourcesSchäfer Philipp0https://orcid.org/0000-0001-7903-4681Fatela João1https://orcid.org/0009-0009-4474-171XVorländer Michael2https://orcid.org/0000-0002-7010-8370Institute for Hearing Technology and Acoustics, RWTH Aachen UniversityInstitute for Hearing Technology and Acoustics, RWTH Aachen UniversityInstitute for Hearing Technology and Acoustics, RWTH Aachen UniversityA central part of auralization is the consideration of realistic sound propagation effects. This can be achieved using computationally efficient physics-based simulations based on the principle geometrical acoustics. When considering complex effects, e.g. curved propagation due to atmospheric refraction, those simulations can be computationally demanding. This can become the bottleneck for real-time auralizations, as the run-time exceeds the duration of one audio block even for large block sizes. A solution is to schedule the simulations into a separate thread. However, this leads to an irregular update rate which is lower than the rate of the audio blocks. Consequently, the output signal can contain audible artifacts. This especially holds when considering the Doppler effect for dynamic scenarios with fast moving sources, like aircraft. This paper introduces a method for interpolating, and thereby upsampling, the results of scheduled simulations in an auralization context in order to avoid such artifacts. The method is applied to an aircraft flyover auralization considering curved sound propagation in an inhomogeneous, moving atmosphere. Using this method, it is possible to auralize such scenarios in real time.https://acta-acustica.edpsciences.org/articles/aacus/full_html/2024/01/aacus230100/aacus230100.htmlauralizationreal timesimulation schedulingaircraft noiseopen-source |
| spellingShingle | Schäfer Philipp Fatela João Vorländer Michael Interpolation of scheduled simulation results for real-time auralization of moving sources Acta Acustica auralization real time simulation scheduling aircraft noise open-source |
| title | Interpolation of scheduled simulation results for real-time auralization of moving sources |
| title_full | Interpolation of scheduled simulation results for real-time auralization of moving sources |
| title_fullStr | Interpolation of scheduled simulation results for real-time auralization of moving sources |
| title_full_unstemmed | Interpolation of scheduled simulation results for real-time auralization of moving sources |
| title_short | Interpolation of scheduled simulation results for real-time auralization of moving sources |
| title_sort | interpolation of scheduled simulation results for real time auralization of moving sources |
| topic | auralization real time simulation scheduling aircraft noise open-source |
| url | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2024/01/aacus230100/aacus230100.html |
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