Feedback control of acoustic musical instruments: collocated control using physical analogs.
Identifieur interne : 001339 ( Main/Exploration ); précédent : 001338; suivant : 001340Feedback control of acoustic musical instruments: collocated control using physical analogs.
Auteurs : Edgar Berdahl [États-Unis] ; Julius O. Smith ; Günter NiemeyerSource :
- The Journal of the Acoustical Society of America [ 1520-8524 ] ; 2012.
Abstract
Traditionally, the average professional musician has owned numerous acoustic musical instruments, many of them having distinctive acoustic qualities. However, a modern musician could prefer to have a single musical instrument whose acoustics are programmable by feedback control, where acoustic variables are estimated from sensor measurements in real time and then fed back in order to influence the controlled variables. In this paper, theory is presented that describes stable feedback control of an acoustic musical instrument. The presentation should be accessible to members of the musical acoustics community who may have limited or no experience with feedback control. First, the only control strategy guaranteed to be stable subject to any musical instrument mobility is described: the sensors and actuators must be collocated, and the controller must emulate a physical analog system. Next, the most fundamental feedback controllers and the corresponding physical analog systems are presented. The effects that these controllers have on acoustic musical instruments are described. Finally, practical design challenges are discussed. A proof explains why changing the resonance frequency of a musical resonance requires much more control power than changing the decay time of the resonance.
DOI: 10.1121/1.3651091
PubMed: 22280719
Affiliations:
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Smith</name></author><author><name sortKey="Niemeyer, Gunter" sort="Niemeyer, Gunter" uniqKey="Niemeyer G" first="Günter" last="Niemeyer">Günter Niemeyer</name></author></analytic><series><title level="j">The Journal of the Acoustical Society of America</title><idno type="eISSN">1520-8524</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Traditionally, the average professional musician has owned numerous acoustic musical instruments, many of them having distinctive acoustic qualities. However, a modern musician could prefer to have a single musical instrument whose acoustics are programmable by feedback control, where acoustic variables are estimated from sensor measurements in real time and then fed back in order to influence the controlled variables. In this paper, theory is presented that describes stable feedback control of an acoustic musical instrument. The presentation should be accessible to members of the musical acoustics community who may have limited or no experience with feedback control. First, the only control strategy guaranteed to be stable subject to any musical instrument mobility is described: the sensors and actuators must be collocated, and the controller must emulate a physical analog system. Next, the most fundamental feedback controllers and the corresponding physical analog systems are presented. The effects that these controllers have on acoustic musical instruments are described. Finally, practical design challenges are discussed. A proof explains why changing the resonance frequency of a musical resonance requires much more control power than changing the decay time of the resonance.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">22280719</PMID><DateCompleted><Year>2012</Year><Month>05</Month><Day>11</Day></DateCompleted><DateRevised><Year>2012</Year><Month>01</Month><Day>27</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1520-8524</ISSN><JournalIssue CitedMedium="Internet"><Volume>131</Volume><Issue>1</Issue><PubDate><Year>2012</Year><Month>Jan</Month></PubDate></JournalIssue><Title>The Journal of the Acoustical Society of America</Title><ISOAbbreviation>J Acoust Soc Am</ISOAbbreviation></Journal><ArticleTitle>Feedback control of acoustic musical instruments: collocated control using physical analogs.</ArticleTitle><Pagination><MedlinePgn>963-73</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1121/1.3651091</ELocationID><Abstract><AbstractText>Traditionally, the average professional musician has owned numerous acoustic musical instruments, many of them having distinctive acoustic qualities. However, a modern musician could prefer to have a single musical instrument whose acoustics are programmable by feedback control, where acoustic variables are estimated from sensor measurements in real time and then fed back in order to influence the controlled variables. In this paper, theory is presented that describes stable feedback control of an acoustic musical instrument. The presentation should be accessible to members of the musical acoustics community who may have limited or no experience with feedback control. First, the only control strategy guaranteed to be stable subject to any musical instrument mobility is described: the sensors and actuators must be collocated, and the controller must emulate a physical analog system. Next, the most fundamental feedback controllers and the corresponding physical analog systems are presented. The effects that these controllers have on acoustic musical instruments are described. Finally, practical design challenges are discussed. 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Smith</name></noCountry><country name="États-Unis"><region name="Californie"><name sortKey="Berdahl, Edgar" sort="Berdahl, Edgar" uniqKey="Berdahl E" first="Edgar" last="Berdahl">Edgar Berdahl</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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