Investigation on the dissemination of unit watt in airborne sound and applications
Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming...
সংরক্ষণ করুন:
| প্রধান লেখক: | |
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| বিন্যাস: | Online |
| ভাষা: | ইংরেজি |
| প্রকাশিত: |
Logos Verlag Berlin
2022
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| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | OCN: 1266738606 |
| ট্যাগগুলো: |
কোনো ট্যাগ নেই, প্রথমজন হিসাবে ট্যাগ করুন!
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| _version_ | 1869526652748300288 |
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| author | Brezas, Spyros |
| author_browse | Brezas, Spyros |
| author_facet | Brezas, Spyros |
| author_sort | Brezas, Spyros |
| collection | Directory of Open Access Books |
| description | Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming at the establishment of traceability in airborne sound. This will enable the characterization of a sound source by its free field sound power. The dissertation describes a study on the dissemination process, which will allow the sound power of a device under test located at a real surrounding environment, to be referred to its free field sound power. Apart from the sound power, the corresponding uncertainty may be estimated in a transparent way, where each uncertainty component is provided. The basic tool for the dissemination process is the substitution method using aerodynamic reference sound sources, applied to both sound pressure and sound intensity measurements. Initially, a theoretical investigation deals with the factors that influence the substitution method. Experimental results are then presented based on measurements using a specially designed scanning apparatus. The transition from calibration to in situ conditions and the required correction, due to changes in environmental and operational conditions, is then discussed. In the last section, the sound power level of devices under test is determined along with its related uncertainty, which is further compared to the up-to-date uncertainty values. |
| format | Online |
| id | doab-20.500.12854ir-84220 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Logos Verlag Berlin |
| publisherStr | Logos Verlag Berlin |
| record_format | ojs |
| spelling | doab-20.500.12854ir-842202025-07-30T07:27:50Z Investigation on the dissemination of unit watt in airborne sound and applications Brezas, Spyros Science Physics Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming at the establishment of traceability in airborne sound. This will enable the characterization of a sound source by its free field sound power. The dissertation describes a study on the dissemination process, which will allow the sound power of a device under test located at a real surrounding environment, to be referred to its free field sound power. Apart from the sound power, the corresponding uncertainty may be estimated in a transparent way, where each uncertainty component is provided. The basic tool for the dissemination process is the substitution method using aerodynamic reference sound sources, applied to both sound pressure and sound intensity measurements. Initially, a theoretical investigation deals with the factors that influence the substitution method. Experimental results are then presented based on measurements using a specially designed scanning apparatus. The transition from calibration to in situ conditions and the required correction, due to changes in environmental and operational conditions, is then discussed. In the last section, the sound power level of devices under test is determined along with its related uncertainty, which is further compared to the up-to-date uncertainty values. 2022-06-19T04:01:40Z 2022-06-19T04:01:40Z 2022-06-18T05:33:14Z 2019 book OCN: 1266738606 https://library.oapen.org/handle/20.500.12657/56741 9783832549718 https://directory.doabooks.org/handle/20.500.12854/84220 eng open access image/jpeg image/jpeg image/jpeg image/jpeg image/jpeg n/a n/a n/a n/a n/a https://library.oapen.org/bitstream/20.500.12657/56741/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56741/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56741/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56741/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56741/1/external_content.pdf Logos Verlag Berlin Logos Verlag Berlin https://doi.org/10.30819/4971 https://doi.org/10.30819/4971 04b263a1-7fba-4491-9eae-1c394ac42fc3 Knowledge Unlatched 9783832549718 Knowledge Unlatched (KU) KU Open Services Logos Verlag Berlin open access |
| spellingShingle | Science Physics Brezas, Spyros Investigation on the dissemination of unit watt in airborne sound and applications |
| title | Investigation on the dissemination of unit watt in airborne sound and applications |
| title_full | Investigation on the dissemination of unit watt in airborne sound and applications |
| title_fullStr | Investigation on the dissemination of unit watt in airborne sound and applications |
| title_full_unstemmed | Investigation on the dissemination of unit watt in airborne sound and applications |
| title_short | Investigation on the dissemination of unit watt in airborne sound and applications |
| title_sort | investigation on the dissemination of unit watt in airborne sound and applications |
| topic | Science Physics |
| topic_facet | Science Physics |
| url | OCN: 1266738606 |
| work_keys_str_mv | AT brezasspyros investigationonthedisseminationofunitwattinairbornesoundandapplications |