Study of the optimal active control of a trombone
In the brass instrument family, the sound can be modified or attenuated using a mute, which is usually inserted in the bell of the instrument. The objective of this paper is to study the principle and the technological feasibility of an active mute using loudspeakers placed in front or around the in...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | Acta Acustica |
| Subjects: | |
| Online Access: | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2022/01/aacus220006/aacus220006.html |
| _version_ | 1827881333817344000 |
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| author | Cavaillès Colas Gazengel Bruno Melon Manuel Ayrault Christophe |
| author_facet | Cavaillès Colas Gazengel Bruno Melon Manuel Ayrault Christophe |
| author_sort | Cavaillès Colas |
| collection | DOAJ |
| description | In the brass instrument family, the sound can be modified or attenuated using a mute, which is usually inserted in the bell of the instrument. The objective of this paper is to study the principle and the technological feasibility of an active mute using loudspeakers placed in front or around the instrument bell. This mute must reduce the acoustic power emitted by the instrument while avoiding any impact on its playability. At this stage, an optimal control is considered and no real-time controller is implemented. Results show that an active control placed outside the trombone is theoretically feasible and can be efficient to reduce the acoustic power up to 2000 Hz by placing a ring of sources around the bell and a source in front of the trombone. The instrument input impedance is very slightly affected by the control. In accordance with numerical simulations, the experiment showed that placing a control speaker very close in front of the bell of the instrument modifies the pressure field of the instrument in such a way that it allows to obtain a power attenuation greater than the predicted one. The control is technologically achievable but requires a high power for the closest source. |
| first_indexed | 2024-03-12T18:36:05Z |
| format | Article |
| id | doaj.art-9b3258cd574b420087e3107f201a06c0 |
| institution | Directory Open Access Journal |
| issn | 2681-4617 |
| language | English |
| last_indexed | 2024-03-12T18:36:05Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Acta Acustica |
| spelling | doaj.art-9b3258cd574b420087e3107f201a06c02023-08-02T07:59:07ZengEDP SciencesActa Acustica2681-46172022-01-0161810.1051/aacus/2022015aacus220006Study of the optimal active control of a tromboneCavaillès Colas0https://orcid.org/0000-0001-6897-4774Gazengel Bruno1Melon Manuel2Ayrault Christophe3Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéLaboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéLaboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéLaboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéIn the brass instrument family, the sound can be modified or attenuated using a mute, which is usually inserted in the bell of the instrument. The objective of this paper is to study the principle and the technological feasibility of an active mute using loudspeakers placed in front or around the instrument bell. This mute must reduce the acoustic power emitted by the instrument while avoiding any impact on its playability. At this stage, an optimal control is considered and no real-time controller is implemented. Results show that an active control placed outside the trombone is theoretically feasible and can be efficient to reduce the acoustic power up to 2000 Hz by placing a ring of sources around the bell and a source in front of the trombone. The instrument input impedance is very slightly affected by the control. In accordance with numerical simulations, the experiment showed that placing a control speaker very close in front of the bell of the instrument modifies the pressure field of the instrument in such a way that it allows to obtain a power attenuation greater than the predicted one. The control is technologically achievable but requires a high power for the closest source.https://acta-acustica.edpsciences.org/articles/aacus/full_html/2022/01/aacus220006/aacus220006.htmlmusical acousticselectroacousticsactive controlbrass instrumentstransducers |
| spellingShingle | Cavaillès Colas Gazengel Bruno Melon Manuel Ayrault Christophe Study of the optimal active control of a trombone Acta Acustica musical acoustics electroacoustics active control brass instruments transducers |
| title | Study of the optimal active control of a trombone |
| title_full | Study of the optimal active control of a trombone |
| title_fullStr | Study of the optimal active control of a trombone |
| title_full_unstemmed | Study of the optimal active control of a trombone |
| title_short | Study of the optimal active control of a trombone |
| title_sort | study of the optimal active control of a trombone |
| topic | musical acoustics electroacoustics active control brass instruments transducers |
| url | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2022/01/aacus220006/aacus220006.html |
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