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Detection of Howling Frequency Using Temporal Variations in Power Spectrum

  • Jae-Won Lee
  • Seung Ho Choi
Part of the Communications in Computer and Information Science book series (CCIS, volume 151)

Abstract

Indoor audio feedback is a common problem in many audio amplification systems. The audio feedback can be out of control in some indoor conditions, which results in howling. Also, the howling frequency is subject to variation by the changes of indoor environments. Most conventional methods attempt to eliminate the howling, but they do not provide a way to predict the occurrence of howling. This paper presents a novel method to predict the howling frequency using temporal variations in power spectrum.

Keywords

Howling acoustic feedback circuit moving average power spectrum 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Jae-Won Lee
    • 1
  • Seung Ho Choi
    • 2
  1. 1.Graduate School of NID Fusion TechnologySeoul National University of Science and TechnologySeoulKorea
  2. 2.Department of Electronic and Information EngineeringSeoul National University of Science and TechnologySeoulKorea

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