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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F26%3A0201010" target="_blank" >RIV/00216305:26220/26:0201010 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0030401826001264" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0030401826001264</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optcom.2026.132987" target="_blank" >10.1016/j.optcom.2026.132987</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20200 - Electrical engineering, Electronic engineering, Information engineering

Projekt

<a href="/cs/project/VJ01010035" target="_blank" >VJ01010035: Bezpečnostní rizika fotonických komunikačních sítí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2026

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

OPTICS COMMUNICATIONS

ISSN

0030-4018

e-ISSN

1873-0310

Svazek periodika

—

Číslo periodika v rámci svazku

608

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001691820500001

EID výsledku v databázi Scopus

2-s2.0-105029987346