Detail publikačního výsledku

Possibilities and Limitations of Speech Acoustic Sensing Using Fiber Optics: Comparison of Interferometric and Distributed Approaches

MOKRÝ, O.; DEJDAR, P.; ČÍŽEK, M.; RAJMIC, P.; SCHIMMEL, J.; HORVÁTH, T.; MÜNSTER, P.; ČÍP, O.

Originální název

Possibilities and Limitations of Speech Acoustic Sensing Using Fiber Optics: Comparison of Interferometric and Distributed Approaches

Anglický název

Possibilities and Limitations of Speech Acoustic Sensing Using Fiber Optics: Comparison of Interferometric and Distributed Approaches

Druh

Článek WoS

Originální abstrakt

The paper investigates the feasibility of capturing human speech using standard telecommunication optical fibers in real-world installations. We compare three acoustic sensing approaches—the Michelson interferometer (MI) and the distributed acoustic sensing (DAS) in intensity (single-pulse) and phase (dual-pulse) modes—and evaluate their performance using the Speech Transmission Index, the Short-Time Objective Intelligibility, and the neurogram similarity index measure. Results show that while all systems can detect the presence and temporal structure of speech, none technique of them achieved intelligible reconstruction under realistic conditions. The MI delivered the highest speech quality metrics, and dual-pulse mode of DAS outperformed the single-pulse mode in terms of sensitivity and the signal-to-noise ratio. The findings highlight the current limitations of fiber-based acoustic sensing for direct speech monitoring but confirm its potential for applications such as speaker activity detection and event classification.

Anglický abstrakt

The paper investigates the feasibility of capturing human speech using standard telecommunication optical fibers in real-world installations. We compare three acoustic sensing approaches—the Michelson interferometer (MI) and the distributed acoustic sensing (DAS) in intensity (single-pulse) and phase (dual-pulse) modes—and evaluate their performance using the Speech Transmission Index, the Short-Time Objective Intelligibility, and the neurogram similarity index measure. Results show that while all systems can detect the presence and temporal structure of speech, none technique of them achieved intelligible reconstruction under realistic conditions. The MI delivered the highest speech quality metrics, and dual-pulse mode of DAS outperformed the single-pulse mode in terms of sensitivity and the signal-to-noise ratio. The findings highlight the current limitations of fiber-based acoustic sensing for direct speech monitoring but confirm its potential for applications such as speaker activity detection and event classification.

Klíčová slova

Distributed Acoustic Sensing; Michelson Interferometer; Speech Intelligibility; Speech Transmission Index; Speech-to-Text

Klíčová slova v angličtině

Distributed Acoustic Sensing; Michelson Interferometer; Speech Intelligibility; Speech Transmission Index; Speech-to-Text

Autoři

MOKRÝ, O.; DEJDAR, P.; ČÍŽEK, M.; RAJMIC, P.; SCHIMMEL, J.; HORVÁTH, T.; MÜNSTER, P.; ČÍP, O.

Rok RIV

2026

Vydáno

09.02.2026

Nakladatel

Elsevier

Periodikum

OPTICS COMMUNICATIONS

Číslo

608

Stát

Nizozemsko

Strany od

1

Strany do

11

Strany počet

11

URL

https://www.sciencedirect.com/science/article/pii/S0030401826001264

BibTex

@article{BUT201010,
  author="Ondřej {Mokrý} and Petr {Dejdar} and  {} and Pavel {Rajmic} and Jiří {Schimmel} and Tomáš {Horváth} and Petr {Münster} and Ondřej {Číp}",
  title="Possibilities and Limitations of Speech Acoustic Sensing Using Fiber Optics: Comparison of Interferometric and Distributed Approaches",
  journal="OPTICS COMMUNICATIONS",
  year="2026",
  number="608",
  pages="1--11",
  doi="10.1016/j.optcom.2026.132987",
  issn="0030-4018",
  url="https://www.sciencedirect.com/science/article/pii/S0030401826001264"
}