Neubauer, Philipp ; Tschesche, Johannes ; Bös, Joachim ; Melz, Tobias ; Hanselka, Holger (2018)
An active-system approach for eliminating the wolf note on a cello.
In: Journal of the Acoustical Society of America (JASA), 143 (5)
doi: 10.1121/1.5037467
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Wolf notes are generally undesirable sounds that occur in string instruments, particularly in cellos. State-of-the-art passive wolf note eliminators affect the whole cello sound and can become ineffective when environmental conditions and, therefore, the cello's structural properties change. In this paper, an approach is presented that uses smart materials to eliminate the wolf note with little effects to the cello's sound. Based on preliminary measurements, a mathematical model of the cello for generating the wolf note and for developing a wolf note elimination controller is set up. The controller consists of a wolf detection criterion that triggers a velocity feedback controller to actively induce damping into the cello's body whenever a wolf note is detected. The controller setup is experimentally validated by an implementation on a test cello. The velocity feedback to induce the active damping is implemented by means of a piezoelectric patch actuator attached to the cello's body. Both the results of the mathematical model and the results of the experimental investigation show a good performance in eliminating the wolf note on a cello.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Neubauer, Philipp ; Tschesche, Johannes ; Bös, Joachim ; Melz, Tobias ; Hanselka, Holger |
| Art des Eintrags: | Bibliographie |
| Titel: | An active-system approach for eliminating the wolf note on a cello |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2018 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the Acoustical Society of America (JASA) |
| Jahrgang/Volume einer Zeitschrift: | 143 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1121/1.5037467 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Wolf notes are generally undesirable sounds that occur in string instruments, particularly in cellos. State-of-the-art passive wolf note eliminators affect the whole cello sound and can become ineffective when environmental conditions and, therefore, the cello's structural properties change. In this paper, an approach is presented that uses smart materials to eliminate the wolf note with little effects to the cello's sound. Based on preliminary measurements, a mathematical model of the cello for generating the wolf note and for developing a wolf note elimination controller is set up. The controller consists of a wolf detection criterion that triggers a velocity feedback controller to actively induce damping into the cello's body whenever a wolf note is detected. The controller setup is experimentally validated by an implementation on a test cello. The velocity feedback to induce the active damping is implemented by means of a piezoelectric patch actuator attached to the cello's body. Both the results of the mathematical model and the results of the experimental investigation show a good performance in eliminating the wolf note on a cello. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Systemzuverlässigkeit, Adaptronik und Maschinenakustik (SAM) |
| Hinterlegungsdatum: | 18 Mai 2018 12:24 |
| Letzte Änderung: | 12 Nov 2024 07:34 |
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| Suche nach Titel in: | TUfind oder in Google |
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An active-system approach for eliminating the wolf note on a cello. (deposited 11 Nov 2024 10:42)
- An active-system approach for eliminating the wolf note on a cello. (deposited 18 Mai 2018 12:24) [Gegenwärtig angezeigt]
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