Source-time dominant modeling of the Doppler shift for the auralization of moving sources
When developing an auralization for acoustic scenarios involving moving sources and receivers, one key feature is the ability to simulate the Doppler shift, i.e., the changing frequency content from the receiver’s perspective. As the time-varying delay between a source and receiver is what accounts...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
|
| Series: | Acta Acustica |
| Subjects: | |
| Online Access: | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2025/01/aacus240026/aacus240026.html |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841557717048623104 |
|---|---|
| author | Ali Randall Christian Andrew |
| author_facet | Ali Randall Christian Andrew |
| author_sort | Ali Randall |
| collection | DOAJ |
| description | When developing an auralization for acoustic scenarios involving moving sources and receivers, one key feature is the ability to simulate the Doppler shift, i.e., the changing frequency content from the receiver’s perspective. As the time-varying delay between a source and receiver is what accounts for the Doppler shift, an approximation of this delay is required to successfully render the changes in frequency content at the receiver. Depending on the signal-processing strategy chosen to accomplish this task, there is, however, a potential to introduce audible artifacts due to frequency folding (aliasing), frequency replication (imaging), and broadband noise. In this paper we discuss the manifestation of such artifacts and propose a method to eliminate them, which can be integrated into the digital signal processing chain of larger auralization schemes. The method is built upon a source-time dominant approach and uses a combination of oversampling, interpolation, and time-varying filtering to predict and eliminate frequency regions at the receiver that are vulnerable to aliasing and imaging. We demonstrate the strengths and weaknesses of the method using a circularly moving source with a fixed receiver. |
| format | Article |
| id | doaj-art-5c80ddb5f85a4cff9251c8aa4dae19c6 |
| institution | Kabale University |
| issn | 2681-4617 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Acta Acustica |
| spelling | doaj-art-5c80ddb5f85a4cff9251c8aa4dae19c62025-01-06T10:56:25ZengEDP SciencesActa Acustica2681-46172025-01-019110.1051/aacus/2024073aacus240026Source-time dominant modeling of the Doppler shift for the auralization of moving sourcesAli Randall0https://orcid.org/0000-0001-7826-1030Christian Andrew1Institute of Sound Recording, University of SurreyApplied Acoustics Branch, NASA Langley Research CenterWhen developing an auralization for acoustic scenarios involving moving sources and receivers, one key feature is the ability to simulate the Doppler shift, i.e., the changing frequency content from the receiver’s perspective. As the time-varying delay between a source and receiver is what accounts for the Doppler shift, an approximation of this delay is required to successfully render the changes in frequency content at the receiver. Depending on the signal-processing strategy chosen to accomplish this task, there is, however, a potential to introduce audible artifacts due to frequency folding (aliasing), frequency replication (imaging), and broadband noise. In this paper we discuss the manifestation of such artifacts and propose a method to eliminate them, which can be integrated into the digital signal processing chain of larger auralization schemes. The method is built upon a source-time dominant approach and uses a combination of oversampling, interpolation, and time-varying filtering to predict and eliminate frequency regions at the receiver that are vulnerable to aliasing and imaging. We demonstrate the strengths and weaknesses of the method using a circularly moving source with a fixed receiver.https://acta-acustica.edpsciences.org/articles/aacus/full_html/2025/01/aacus240026/aacus240026.htmlauralizationsignal processingdoppler shiftsample rate conversionvirtual acoustics |
| spellingShingle | Ali Randall Christian Andrew Source-time dominant modeling of the Doppler shift for the auralization of moving sources Acta Acustica auralization signal processing doppler shift sample rate conversion virtual acoustics |
| title | Source-time dominant modeling of the Doppler shift for the auralization of moving sources |
| title_full | Source-time dominant modeling of the Doppler shift for the auralization of moving sources |
| title_fullStr | Source-time dominant modeling of the Doppler shift for the auralization of moving sources |
| title_full_unstemmed | Source-time dominant modeling of the Doppler shift for the auralization of moving sources |
| title_short | Source-time dominant modeling of the Doppler shift for the auralization of moving sources |
| title_sort | source time dominant modeling of the doppler shift for the auralization of moving sources |
| topic | auralization signal processing doppler shift sample rate conversion virtual acoustics |
| url | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2025/01/aacus240026/aacus240026.html |
| work_keys_str_mv | AT alirandall sourcetimedominantmodelingofthedopplershiftfortheauralizationofmovingsources AT christianandrew sourcetimedominantmodelingofthedopplershiftfortheauralizationofmovingsources |