Title:
HEARING AID
Document Type and Number:
Japanese Patent JPS59196700
Kind Code:
A
Abstract:
A hearing aid comprising a microphone whose output signal is split by high and low pass filters and supplied to two channels. Each channel includes a variable gain circuit the outputs of which are mixed and supplied to an earphone. The turnover frequencies of the filters are such that one channel limits the dynamic range of vowels whereas the other channel limits the dynamic range of consonents, thus preventing interaction and masking of consonants by preceding vowels. The intelligibility of speech is thus improved.
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Inventors:
LAURENCE ROGER FREDERICK
Application Number:
JP18442982A
Publication Date:
November 08, 1984
Filing Date:
October 20, 1982
Export Citation:
Assignee:
REYNOLDS & LAURENCE IND
International Classes:
H03G9/02; H04R25/04; H04R25/00; (IPC1-7): H04R25/04
Domestic Patent References:
| JPS5034405A | 1975-04-02 | |||
| JPS5418087U | 1979-02-05 |
Attorney, Agent or Firm:
Tadahiko Ito