• Title/Summary/Keyword: 음량균일화

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Audio Mixer Algorithm for Enhancing Speech Quality of Multi-party Audio Telephony (다자간 음성통화 품질 향상을 위한 오디오 믹서 알고리즘)

  • Ryu, Sang-Hyeon;Kim, Hyoung-Gook
    • The Journal of the Acoustical Society of Korea
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    • v.32 no.6
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    • pp.541-547
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    • 2013
  • The speech quality of multi-party audio telephony between two, three or more participants is decreased by audio volume imbalance, audio volume saturation and noise level increase. To solve this issue, this paper proposes an advanced audio mixing algorithm for software-based multi-point control unit. Our approach is based on the combined voice activity detection and gain control technique that consists of a set of algorithms that classify audio signals, estimate audio volumes, adjust gain factors and mix audio signals of all channels. The proposed audio mixing algorithm is computationally efficient, delivers high-quality speech, and is suitable for use in any practical multi-party audio telephony.