DC ElementWertSprache
dc.contributor.authorFalkhofen, Judith-
dc.contributor.authorWolff, Marcus-
dc.date.accessioned2023-05-11T12:15:42Z-
dc.date.available2023-05-11T12:15:42Z-
dc.date.issued2023-03-03-
dc.identifier.issn1424-8220en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12738/13691-
dc.description.abstractCan ordinary Micro-Electro-Mechanical-Systems (MEMS) microphones be used for near-ultrasonic applications? Manufacturers often provide little information about the signal-to-noise ratio (SNR) in the ultrasound (US) range and, if they do, the data are often determined in a manufacturer-specific manner and are generally not comparable. Here, four different air-based microphones from three different manufacturers are compared with respect to their transfer functions and noise floor. The deconvolution of an exponential sweep and a traditional calculation of the SNR are used. The equipment and methods used are specified, which makes it easy to repeat or expand the investigation. The SNR of MEMS microphones in the near US range is mainly affected by resonance effects. These can be matched for applications with low-level signals and background noise such that the highest possible SNR can be achieved. Two MEMS microphones from Knowles performed best for the frequency range from 20 to 70 kHz; above 70 kHz, an Infineon model delivered the best performance.en
dc.description.sponsorshipHochschule für Angewandte Wissenschaften Hamburgen_US
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.relation.ispartofSensorsen_US
dc.subjectdeconvolutionen_US
dc.subjectMEMS microphonesen_US
dc.subjectphotoacoustic spectroscopyen_US
dc.subjectsensitivityen_US
dc.subjectSNRen_US
dc.subjectultrasounden_US
dc.subject.ddc620: Ingenieurwissenschaftenen_US
dc.titleNear-ultrasonic transfer function and SNR of differential MEMS microphones suitable for photoacousticsen
dc.typeArticleen_US
dc.identifier.doi10.48441/4427.763-
dc.description.versionPeerRevieweden_US
local.contributorPerson.editorLázaro, Antonio-
openaire.rightsinfo:eu-repo/semantics/openAccessen_US
tuhh.container.issue5en_US
tuhh.container.volume23en_US
tuhh.identifier.urnurn:nbn:de:gbv:18302-reposit-155406-
tuhh.oai.showtrueen_US
tuhh.publication.instituteDepartment Maschinenbau und Produktionen_US
tuhh.publication.instituteFakultät Technik und Informatiken_US
tuhh.publication.instituteHeinrich-Blasius-Institut für Physikalische Technologienen_US
tuhh.publisher.doi10.3390/s23052774-
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.rights.cchttps://creativecommons.org/licenses/by/4.0/en_US
dc.type.casraiJournal Article-
dc.type.diniarticle-
dc.type.driverarticle-
dc.type.statusinfo:eu-repo/semantics/publishedVersionen_US
dcterms.DCMITypeText-
tuhh.container.articlenumber2774en_US
local.comment.externalFalkhofen, J.; Wolff, M. Near-Ultrasonic Transfer Function and SNR of Differential MEMS Microphones Suitable for Photoacoustics. Sensors 2023, 23, 2774, https://doi.org/10.3390/s23052774. The APC was funded by Hamburg University of Applied Sciences.en_US
tuhh.apc.statustrueen_US
item.creatorGNDFalkhofen, Judith-
item.creatorGNDWolff, Marcus-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.creatorOrcidFalkhofen, Judith-
item.creatorOrcidWolff, Marcus-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.openairetypeArticle-
crisitem.author.deptDepartment Maschinenbau und Produktion-
crisitem.author.orcid0000-0003-0781-5248-
crisitem.author.parentorgFakultät Technik und Informatik-
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