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Acoustic OFDM system and its extension

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Abstract

This paper presents a method of aerial acoustic communication in which data is modulated using OFDM (Orthogonal Frequency Division Multiplexing) and embedded in regular audio material without significantly degrading the quality of the original sound. It replaces the high frequency band of the audio signal with OFDM carriers, each of which is power-controlled according to the spectrum envelope of the original audio signal. The implemented system enables the transmission of short text messages from loudspeakers to mobile handheld devices at a distance of around 3 m. This paper also provides the subjective assessment results and the transmission performances.

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Authors and Affiliations

  1. 3-5 Hikarinooka Yokosuka, Kanagawa, Japan

    Hosei Matsuoka, Yusuke Nakashima & Takeshi Yoshimura

Authors
  1. Hosei Matsuoka
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  2. Yusuke Nakashima
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  3. Takeshi Yoshimura
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Correspondence to Hosei Matsuoka.

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Matsuoka, H., Nakashima, Y. & Yoshimura, T. Acoustic OFDM system and its extension. TVC 25, 3–12 (2009). https://doi.org/10.1007/s00371-008-0281-5

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  • DOI: https://doi.org/10.1007/s00371-008-0281-5

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