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Title:
AUTOMATIC GAIN CONTROL APPARATUS
Document Type and Number:
Japanese Patent JP2007274721
Kind Code:
A
Abstract:

To provide an improved gain control apparatus for an auditory prosthesis, such as hearing aid or cochlear prosthesis.

The output of a controlled amplifier (11) is processed so as to derive an average noise floor level (15). This noise floor level (15) is compared to a predetermined level (14), and the gain is gradually adjusted high or low, in response to the comparison result.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
SELIGMAN PETER
Application Number:
JP2007129574A
Publication Date:
October 18, 2007
Filing Date:
May 15, 2007
Export Citation:
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Assignee:
COCHLEAR LTD
International Classes:
H03G3/32; A61F11/00; A61N1/36; H03G3/20; H03G3/24; H03G3/30; H03G3/34; H04R25/00; H04R25/04
Attorney, Agent or Firm:
石田 敬
平岩 賢三
西山 雅也