Abstract
The annoyance of noise in hearing instruments caused by
electromagnetic interference from Global systems for Mobile
Communication (GSM) and Digital European Cordless
Telecommunication (DECT) mobile telephones has been subjectively
evaluated by test subjects. The influence on speech recognition
from the GSM and the DECT noises was also determined. The
measurements involved seventeen hearing-imparied subjects. The
annoyance was tested with GSM and DECT noise, each one mixed with
continuous speech, a mall environment noise, or an office
environment noise. Speech recognition was tested with the DANTALE
word material mixed with GSM and DECT noise. The listening tests
showed that if the noise level is acceptable so also is speech
recognition. The results agree well with an investigation carried
out on normal-hearing subjects. If a hearing instrument user is
able to use a telephone without annoyance, the input-related noise
level must not exceed 47 dB SPL for GSM and 46 dB SPL for DECT.
| Original language | English |
|---|---|
| Journal | Scandinavian Audiology |
| Volume | 25 |
| Issue number | 4 |
| Pages (from-to) | 227-232 |
| ISSN | 0105-0397 |
| Publication status | Published - 1996 |