한국음향학회:학술대회논문집 (Proceedings of the Acoustical Society of Korea Conference)

한국음향학회 (The Acoustical Society of Korea)
권호 표지

HEARING AND HOWLING SUPPRESSION BY ADAPTIVE FEEDBACK CANCELLATION WITH FREQUENCY COMPRESSION

  • Harry Alfonso L. Joson (Research Institute of Electrical Communication Tohku University) ;
  • futoshi Asano (Research Institute of Electrical Communication Tohku University) ;
  • Yoiti Suzuki (Research Institute of Electrical Communication Tohku University) ;
  • Toshio Sone (Research Institute of Electrical Communication Tohku University)
  • 발행 : 1994.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The use of adaptive feedback cancellation to prevent howling requires a reference signal that is correlated with the feedback signal by is not correlated with the input signal. Such a signal is hard to obtain in hearing aids. In this paper, the use fo frequency compression to decorrelate the output signal with input signal for use as reference is presented. Performance evaluation results indicate that with the proper choice of system parameters, the use of this system can provide a significant increase in howling margin with minimal deterioration in output signal quality.

키워드