Onset of feedback howl in hearing aids

Auteurs-es

  • Michael R. Stinson National Research Council, Ottawa, Ont. K1A 0R6, Canada
  • Gilles A. Daigle National Research Council, Ottawa, Ont. K1A 0R6, Canada

Mots-clés :

Acoustic noise, Amplification, Electric potential, Feedback, Frequencies, Microphones, Oscillations, Signal processing, Telephone sets, Transfer functions, Acoustic feedback howl, Electrical signals, Feedback paths, Open-loop transfer functions

Résumé

The role of acoustical feedback howl in hearing aids is discussed. The Nyquist criterion asserted that the onset of feedback howl occurs when the overall feedback gain is unity. It is observed that the size of the feedback signal depends on the amplification settings of the hearing aid. It is stated that upon meeting the conditions for feedback howl, the howl will be evident at the ear canal microphone.

Fichiers supplémentaires

Publié-e

2004-09-01

Comment citer

1.
Stinson MR, Daigle GA. Onset of feedback howl in hearing aids. Canadian Acoustics [Internet]. 1 sept. 2004 [cité 21 févr. 2025];32(3):66-7. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1630

Numéro

Vol. 32 No. 3 (2004)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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