Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Sensitivity analysis of transfer function estimation in inverse methods
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Drift, underhåll och akustik.ORCID-id: 0000-0002-2237-878X
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Drift, underhåll och akustik.ORCID-id: 0000-0003-2955-2776
2005 (Engelska)Ingår i: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, nr Suppl 1, s. S16-Artikel i tidskrift, Meeting abstract (Refereegranskat) Published
Abstract [en]

Summary form only given. A complex sound source consists of several partial sound sources that all contribute to the total sound pressure. A method to separate these partial sound sources into separate time histories is based on inverse filtering of reciprocally measured transfer functions. The transfer functions are measured reciprocally between a number of fictitious monopoles on each partial source and measurement points distributed around the sound source. The method is divided into 5 steps: recording of sound pressure signals, measurement of transfer function, calculation of source strength matrix, calculation of filters and filtering of the recorded sound pressure signals. Correct estimations of the transfer functions are critical for inverse methods to work satisfactory. Normally the transfer functions in this case of studies are calculated as H1 because of the noise contribution to the responses. However, it has been suggested that inverse methods could benefit of using H2 instead. The objective of this investigation is to analyze the effect of selecting either H1 or H2 for the calculation of the transfer functions in case of auralization of separated time histories. For the experiments a complex sound source consisting of two separate cylinder heads with valve covers have been used. Each cylinder head with valve cover was treated as a partial source. The two partial sources were excited with two uncorrelated signals that could be controlled individually. By that, listening tests could be used to verify the authenticity of the separated source signals depending of the transfer functions were estimated as H1 or H2

Ort, förlag, år, upplaga, sidor
2005. nr Suppl 1, s. S16-
Nationell ämneskategori
Strömningsmekanik och akustik
Forskningsämne
Teknisk akustik
Identifikatorer
URN: urn:nbn:se:ltu:diva-37781Lokalt ID: be881c70-03b5-11e0-b767-000ea68e967bOAI: oai:DiVA.org:ltu-37781DiVA, id: diva2:1011279
Konferens
Forum Acusticum : 29/08/2005 - 02/09/2005
Anmärkning
Godkänd; 2005; 20101209 (ysko)Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2017-11-30Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Personposter BETA

Johnsson, RogerJohansson, Örjan

Sök vidare i DiVA

Av författaren/redaktören
Johnsson, RogerJohansson, Örjan
Av organisationen
Drift, underhåll och akustik
I samma tidskrift
Acta Acoustica united with Acustica
Strömningsmekanik och akustik

Sök vidare utanför DiVA

GoogleGoogle Scholar

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 10 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf