Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Testing of hearing aids
Reexamination Certificate
1996-05-01
2001-12-04
Harvey, Minsun Oh (Department: 2644)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Testing of hearing aids
C381S312000, C073S585000
Reexamination Certificate
active
06327366
ABSTRACT:
The present invention relates to a method according to the precharacterizing part of claim
1
, an apparatus according to the precharacterizing part of claim
23
and a hearing device according to claim
39
.
DEFINITIONS
The term psycho-acoustic perception variable is used for a variable that is formed in a nonlinear mariner by individual regularities of the perception, of physical-acoustic variables, such as frequency spectrum, sound pressure level, phase spectrum, signal course, etc.
In the past, known hearing devices modified physical, acoustic signal variables such that a hearing impaired individual could hear better with a hearing device. The adjustment of the hearing device is ensued by the adjustment of physical transfer variables, such as frequency-dependent amplification, magnitude limitation etc., until the individual is satisfied by the hearing device within the scope of the given possibilities.
Although it is known, for which reference is made to the mentioned publications, that the human acoustic perception follows complex psycho-acoustic individual valuations, these known phenomenon have not been used to optimize a hearing device until now.
Thereby, satisfying corrections with known hearing devices could mainly be obtained through taking the average over all known acoustic stimulus signals which occur in practice; mutual influence of acoustic stimulus signals could only be considered in an unsatisfying manner, if at all. Nonlinear phenomenon of psycho-acoustic perception, such as loudness and loudness summation, frequency and time masking, have not been considered.
It is an object of the present invention to provide a method, an apparatus and a hearing device, respectively, of the above-mentioned manner which allow to correct an individual, impaired, psycho-acoustic perception behavior relative to the respective standard, among which the statistical standard perception behavior of men is meant.
This will be obtained by a method of the above-mentioned manner by its implementation thereof according to the characterizing part of claim
1
, by an apparatus of the above-mentioned manner by its realization according to the characterizing part of claim
23
.
Preferred embodiments of the method according to the present invention are specified in claims
2
to
22
, of the apparatus according to the present invention in claims
24
to
38
and of the hearing device according to the present invention in claim
40
.
As will be seen, the apparatus for the adjustment of a hearing device according to the present invention can separately be realized from the hearing device. In addition, the apparatus according to the present invention also comprises means for the adjustment at the hearing device to correct the considered perception variables for the individual.
REFERENCES:
patent: 4471171 (1984-09-01), Kopke et al.
patent: 4489610 (1984-12-01), Slavin
patent: 5274711 (1993-12-01), Rutledge et al.
patent: 5303306 (1994-04-01), Brillhart et al.
patent: 0252205 (1988-01-01), None
patent: 0535425A2 (1993-04-01), None
patent: 2033641A (1980-05-01), None
patent: 2184629A (1987-06-01), None
patent: WO 90/08448 (1990-07-01), None
patent: WO 90/09760 (1990-09-01), None
European Search Report For EP 95 10 3571.
Bachler Herbert
Uvacek Bohumir
Harvey Minsun Oh
Pearne & Gordon LLP
Phonak AG
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