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Audio quality level vs. signal-to-interference ratio in isofrequency FM broadcasting

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Abstract

Frequency modulated (FM) transmissions play a key role into radio broadcasting. This paper presents a study on the audio quality of demodulated FM transmissions corrupted by co-channel interference. A panel of listeners has judged audio signals containing the superposition of “desired” and “interfering” signals with different signal-to-interference ratios (SIR). The paper summarises the outcomes of a comprehensive campaign of audio tests, which provide detailed estimates of the perceived quality of interfered FM transmissions. Furthermore, the paper presents a thorough analysis and interpretation of the tests, which establishes a relationship between five-grade ITU-R BS.1284-2 QoS scale and signal-to-interference ratio (SIR).

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Authors and Affiliations

  1. Dipartimento Politecnico di Ingegneria e Architettura, Università degli Studi di Udine, via delle Scienze 206, 33100, Udine, Italy

    Marco De Piante, Stefano Boscolo, Emanuele Turco, Paolo Gardonio & Michele Midrio

Authors
  1. Marco De Piante
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  2. Stefano Boscolo
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  3. Emanuele Turco
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  4. Paolo Gardonio
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  5. Michele Midrio
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Correspondence to Michele Midrio.

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De Piante, M., Boscolo, S., Turco, E. et al. Audio quality level vs. signal-to-interference ratio in isofrequency FM broadcasting. Ann. Telecommun. 76, 801–811 (2021). https://doi.org/10.1007/s12243-021-00832-4

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  • DOI: https://doi.org/10.1007/s12243-021-00832-4

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