Quality Evaluation of Speech Transmission via Two-way BPL-PLC Voice Communication System in an Underground Mine

Przemysław Falkowski-Gilski; Grzegorz Debita

doi:10.24425/aoa.2023.146816

Quality Evaluation of Speech Transmission via Two-way BPL-PLC Voice Communication System in an Underground Mine

Abstract

In order to design a stable and reliable voice communication system, it is essential to know how many resources are necessary for conveying quality content. These parameters may include objective quality of service (QoS) metrics, such as: available bandwidth, bit error rate (BER), delay, latency as well as subjective quality of experience (QoE) related to user expectations. QoE is expressed as clarity of speech and the ability to interpret voice commands with adequate mean opinion score (MOS) grades. This paper describes a quality evaluation study of a two-way speech transmission system via bandwidth over power line – power line communication (BPL-PLC) technology in an operating underground mine. We investigate how different features of the available wired medium can affect end-user quality. The results of the described study include: two types of coupling (capacitive and inductive), two transmission modes (mode 1 and 11), and four language sets of speech samples (American English, British English, German, and Polish) encoded at three different bit rates (8, 16, and 24 kbps). Our findings can aid both researchers working on low-bit rate coding and compression, signal processing and speech perception, as well as professionals active in the mining and oil industry.

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Authors (2)

Przemysław Falkowski-Gilski dr inż.
Grzegorz Debita dr inż.

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Articles

Type:

artykuły w czasopismach

Published in:

Archives of Acoustics no. 48, pages 585 - 592,
ISSN: 0137-5075

Language:

English

Publication year:

2023

Bibliographic description:

Falkowski-Gilski P., Debita G.: Quality Evaluation of Speech Transmission via Two-way BPL-PLC Voice Communication System in an Underground Mine// Archives of Acoustics -Vol. 48,iss. 4 (2023), s.585-592

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