Title:
FITTING METHOD AND A HEARING AID FOR SUPPRESSION OF PERCEIVED OCCLUSION
Document Type and Number:
WIPO Patent Application WO2002085063
Kind Code:
A3
Abstract:
A fitting method is provided for a multichannel hearing aid (20) with at least one low frequency channel (361) having an individually adjustable compressor (381). The method comprises the steps of first adjusting the characteristic of the compressor according to the hearing loss to be compensated by the hearing aid, followed by the step of increasing the compression ratio of the characteristic of the compressor in the at least one low frequency band. The at least one low frequency channel may further comprise an offset amplifier adding an offset gain to the compressor characteristic, and the method may further comprise the step of adjusting the offset gain in the range from -20 dB to 20 dB. After adjustment according to the method, compressors operating at low frequencies enhance low level signals and attenuate high level signals whereby perception of occlusion is suppressed. The invention provides a fitting method and a hearing aid for suppression of perceived occlusion.
Inventors:
LUDVIGSEN CARL (DK)
JESSEN ANDERS HOLM (DK)
JESSEN ANDERS HOLM (DK)
Application Number:
PCT/DK2002/000247
Publication Date:
October 23, 2003
Filing Date:
April 12, 2002
Export Citation:
Assignee:
WIDEX AS (DK)
LUDVIGSEN CARL (DK)
JESSEN ANDERS HOLM (DK)
LUDVIGSEN CARL (DK)
JESSEN ANDERS HOLM (DK)
International Classes:
H04R25/00; (IPC1-7): H04R25/00
Domestic Patent References:
| WO1989008353A1 | 1989-09-08 | |||
| WO1997014266A2 | 1997-04-17 | |||
| WO2000065872A1 | 2000-11-02 |
Other References:
UEDA Y ET AL: "AMPLITUDE COMPRESSION METHOD FOR A DIGITAL HEARING AID USING A COMPOSITE FILTER", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART III - FUNDAMENTAL ELECTRONIC SCIENCE, SCRIPTA TECHNICA. NEW YORK, US, vol. 83, no. 9, PART 3, 2000, pages 57 - 68, XP000958049, ISSN: 1042-0967
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