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A comparison of wind noise in four hearing instruments

In English

Författare

  • Jan Grenner
  • Ulla Abrahamsson
  • Birgitta Jernberg
  • Sven Lindblad

Summary, in English

Wind noise was measured in four behind-the-ear hearing instruments with different microphone openings. A silent airflow of 7 m/s was directed toward the ear of a Kemar head and the resulting wind noise was measured. The amplification was set to an insertion gain of 35 dB at 1.6 kHz. The wind noise amplitude at the position of the drum ranged from 84 to 97 dB(A). The hearing instrument with a partially covered microphone entrance proved best, whereas one with an open microphone entrance had the poorest performance. A reduction in wind noise of 6-17 dB could be achieved in all hearing instruments by using a simple windscreen made of Styrofoam. The windscreen affected the frequency response by less than 2 dB. By subtracting the insertion gain from the wind noise, an equivalent wind noise could be presented as a function of frequency. A considerable difference was found between the wind noise sensitivity in different hearing instruments. All could be improved by a windscreen without adversely affecting the frequency response.

Publiceringsår

2000

Språk

Engelska

Sidor

171-174

Publikation/Tidskrift/Serie

Scandinavian Audiology

Volym

29

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Taylor & Francis

Ämne

  • Otorhinolaryngology

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0105-0397