Subjective Quality Evaluation of Speech Signals Transmitted via BPL-PLC Wired System

Przemysław Falkowski-Gilski; Grzegorz Debita; Marcin Habrych; Bogdan Miedziński; Przemysław Jedlikowski; Bartosz Polnik; Jan Wandzio; Xin Wang

doi:10.21437/interspeech.2020-1077

Subjective Quality Evaluation of Speech Signals Transmitted via BPL-PLC Wired System

Abstract

The broadband over power line – power line communication (BPL-PLC) cable is resistant to electricity stoppage and partial damage of phase conductors. It maintains continuity of transmission in case of an emergency. These features make it an ideal solution for delivering data, e.g. in an underground mine environment, especially clear and easily understandable voice messages. This paper describes a subjective quality evaluation of such a system. The solution was designed and tested in real-time operating conditions. It consists of a one-way transmission system, dedicated to delivering speech signals and voice commands. The study involved signal samples in three languages: English, German, and Polish, processed at different bitrates: 8, 16, and 24 kbps. Obtained results confirmed the usefulness of BPL-PLC technology for speech transmission purposes. Even in a narrowband scenario, with bitrates smaller than 1 Mbps, it proved to be a potentially life-saving communication system. Results of this study may aid researchers and parties from the mining and oil industry, as well as professionals involved in rescue operations.

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Authors (8)

Przemysław Falkowski-Gilski dr inż.
Grzegorz Debita dr inż.
Marcin Habrych dr hab. inż.
Bogdan Miedziński prof. dr hab. inż.
Przemysław Jedlikowski
Bartosz Polnik dr inż.
Jan Wandzio dr inż.
Xin Wang

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Details

Category:: Conference activity
Type:: publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Language:: English
Publication year:: 2020
Bibliographic description:: Falkowski-Gilski P., Debita G., Habrych M., Miedziński B., Jedlikowski P., Polnik B., Wandzio J., Wang X.: Subjective Quality Evaluation of Speech Signals Transmitted via BPL-PLC Wired System// / : , 2020,
DOI:: Digital Object Identifier (open in new tab) 10.21437/interspeech.2020-1077
Verified by:: Gdańsk University of Technology