Auralization of High-Order Directional Sources from First-Order RIR Measurements
Can auralization of a highly directional source in a room succeed if it employs a room impulse response (RIR) measurement or simulation relying on a first-order directional source, only? This contribution presents model and evaluation of a source-and-receiver-directional Ambisonics RIR capture and p...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/11/3747 |
| _version_ | 1827715985954570240 |
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| author | Markus Zaunschirm Franck Zagala Franz Zotter |
| author_facet | Markus Zaunschirm Franck Zagala Franz Zotter |
| author_sort | Markus Zaunschirm |
| collection | DOAJ |
| description | Can auralization of a highly directional source in a room succeed if it employs a room impulse response (RIR) measurement or simulation relying on a first-order directional source, only? This contribution presents model and evaluation of a source-and-receiver-directional Ambisonics RIR capture and processing approach (SRD ARIR) based on a small set of responses from a first-order source to a first-order receiver. To enhance the directional resolution, we extend the Ambisonic spatial decomposition method (ASDM) to upscale the first-order resolution of both source and receiver to higher orders. To evaluate the method, a listening experiment was conducted based on first-order SRD-ARIR measurements, into which the higher-order directivity of icosahedral loudspeaker’s (IKO) was inserted as directional source of well-studied perceptual effects. The results show how the proposed method performs and compares to alternative rendering methods based on measurements taken in the same acoustic environment, e.g., multiple-orientation binaural room impulse responses (MOBRIRs) from the physical IKO to the KU-100 dummy head, or higher-order SRD ARIRs from IKO to em32 Eigenmike. For optimal externalization, our experiments exploit the benefits of virtual reality, using a highly realistic visualization on head-mounted-display, and a user interface to report localization by placing interactive visual objects in the virtual space. |
| first_indexed | 2024-03-10T19:32:01Z |
| format | Article |
| id | doaj.art-4865b2617a3548d9b62f488a80c78a48 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:32:01Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-4865b2617a3548d9b62f488a80c78a482023-11-20T02:02:22ZengMDPI AGApplied Sciences2076-34172020-05-011011374710.3390/app10113747Auralization of High-Order Directional Sources from First-Order RIR MeasurementsMarkus Zaunschirm0Franck Zagala1Franz Zotter2Institute of Electronic Music and Acoustics, University of Music and Performing Arts Graz, Inffeldgasse 10/III, 8010 Graz, AustriaInstitute of Electronic Music and Acoustics, University of Music and Performing Arts Graz, Inffeldgasse 10/III, 8010 Graz, AustriaInstitute of Electronic Music and Acoustics, University of Music and Performing Arts Graz, Inffeldgasse 10/III, 8010 Graz, AustriaCan auralization of a highly directional source in a room succeed if it employs a room impulse response (RIR) measurement or simulation relying on a first-order directional source, only? This contribution presents model and evaluation of a source-and-receiver-directional Ambisonics RIR capture and processing approach (SRD ARIR) based on a small set of responses from a first-order source to a first-order receiver. To enhance the directional resolution, we extend the Ambisonic spatial decomposition method (ASDM) to upscale the first-order resolution of both source and receiver to higher orders. To evaluate the method, a listening experiment was conducted based on first-order SRD-ARIR measurements, into which the higher-order directivity of icosahedral loudspeaker’s (IKO) was inserted as directional source of well-studied perceptual effects. The results show how the proposed method performs and compares to alternative rendering methods based on measurements taken in the same acoustic environment, e.g., multiple-orientation binaural room impulse responses (MOBRIRs) from the physical IKO to the KU-100 dummy head, or higher-order SRD ARIRs from IKO to em32 Eigenmike. For optimal externalization, our experiments exploit the benefits of virtual reality, using a highly realistic visualization on head-mounted-display, and a user interface to report localization by placing interactive visual objects in the virtual space.https://www.mdpi.com/2076-3417/10/11/3747measurement-based auralizationroom impulse response measurementsource directivityASDM upscalingdynamic binaural renderingBRIR measurements |
| spellingShingle | Markus Zaunschirm Franck Zagala Franz Zotter Auralization of High-Order Directional Sources from First-Order RIR Measurements Applied Sciences measurement-based auralization room impulse response measurement source directivity ASDM upscaling dynamic binaural rendering BRIR measurements |
| title | Auralization of High-Order Directional Sources from First-Order RIR Measurements |
| title_full | Auralization of High-Order Directional Sources from First-Order RIR Measurements |
| title_fullStr | Auralization of High-Order Directional Sources from First-Order RIR Measurements |
| title_full_unstemmed | Auralization of High-Order Directional Sources from First-Order RIR Measurements |
| title_short | Auralization of High-Order Directional Sources from First-Order RIR Measurements |
| title_sort | auralization of high order directional sources from first order rir measurements |
| topic | measurement-based auralization room impulse response measurement source directivity ASDM upscaling dynamic binaural rendering BRIR measurements |
| url | https://www.mdpi.com/2076-3417/10/11/3747 |
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