Investigation of the Optimal Parameters of the Distributed Fiber Microphone Circuit Based on φ-OTDR for Speech Recognition
A study of the optimal parameters of a distributed fiber microphone circuit based on a laboratory setup of a phase-sensitive optical reflectometer (φ-OTDR), which reproduces the work of φ-OTDR at one point, has been carried out. Various schemes for constructing a microphone based on φ-OTDR and vario...
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| Veröffentlicht in: | Instruments and experimental techniques (New York) 2023-10, Vol.66 (5), p.832-836 |
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| container_issue | 5 |
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| container_title | Instruments and experimental techniques (New York) |
| container_volume | 66 |
| creator | Orlova, M. V. Gritsenko, T. V. Zhirnov, A. A. Konstantinov, Yu. A. Turov, A. T. Pnev, A. B. Karasik, V. E. |
| description | A study of the optimal parameters of a distributed fiber microphone circuit based on a laboratory setup of a phase-sensitive optical reflectometer (φ-OTDR), which reproduces the work of φ-OTDR at one point, has been carried out. Various schemes for constructing a microphone based on φ-OTDR and various sampling rates of the analog-to-digital converter are investigated. The optimal configuration of the φ-OTDR circuit is substantiated, which made it possible to ensure high quality of human speech recognition during voice recording by the proposed method with a sampling frequency of 40 kHz. In a standard phrase based on Harvard sentences containing 80 words, 71 words were recognized, i.e., 88.75% of their total number. |
| doi_str_mv | 10.1134/S0020441223050202 |
| format | Article |
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| subjects | Analog circuits Analog to digital converters Biology Electrical Engineering Measurement Science and Instrumentation Medicine Parameters Physical Chemistry Physical Instruments for Ecology Physics Physics and Astronomy Reflectometers Sampling Sentences Speech recognition Voice recognition Words (language) |
| title | Investigation of the Optimal Parameters of the Distributed Fiber Microphone Circuit Based on φ-OTDR for Speech Recognition |
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