| DOI | Resolve DOI: https://doi.org/10.1109/MetroInd4.0IoT48571.2020.9138242 |
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| Author | Search for: Cho, Wan-Ho; Search for: Koukoulas, Triantafillos1 |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Format | Text, Article |
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| Conference | 2020 IEEE International Workshop on Metrology for Industry 4.0 & IoT (MetroInd 4.0 & IoT), June 3-5, 2020, Roma, Italy |
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| Subject | traceability chain; acoustic standard; nonstandardized acoustic sensor; calibration; micromechanical devices; correlation; current measurement; acoustic sensors; acoustic measurements; acoustics; optical sensors; micromechanical devices; microphones |
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| Abstract | A new traceability chain for non-standardized acoustic sensors is proposed by using the absolute measurement method of acoustic pressures. The current traceability chain for sound-in-air measurements is based on the laboratory standard microphone. However, this approach has clear limitations and cannot be applied to non-standard sensors such as MEMS microphones. This is because the unit of sound-in-air measurement is indirectly defined via the sensitivity of laboratory standard microphones. As a method to determine the acoustic pressure in an absolute manner, the optical method based on photon correlation is applied and the new traceability chain is proposed based on the direct traceability of the SI unit. As an example, the calibration of a MEMS microphone is demonstrated with the photon correlation method. |
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| Publication date | 2020-06 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | c5bbf866-f5eb-4991-94c9-10c649c0f631 |
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| Record created | 2022-07-19 |
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| Record modified | 2022-07-19 |
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