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(11) | EP 1 705 950 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Method for individually fitting a hearing instrument |
| (57) The invention relates to a method for individually fitting a hearing instrument (10,
12) to a user, comprising at least one microphone (20) for generating an input audio
signal from ambient sound, an audio signal processing unit (26) for processing the
input audio signal into a processed output audio signal, and a transducer for stimulation
of the human auditory system according to the processed output audio signal as input
to said transducer, the method comprising: providing the user with the hearing instrument
and starting operation of the hearing instrument; pre-defining a desired target loudness
function, wherein loudness perception of a stimulus by the user when using the hearing
instrument is defined as function of frequency and input sound pressure level at the
microphone; measuring for a given measurement parameter set of perceived loudness
levels and frequencies or frequency bands the respective transducer input audio signal
level to be applied to the transducer input in order to achieve the respective perceived
loudness level at the respective frequency or frequency band, said measurement parameter
set comprising at least a low loudness level, an intermediate loudness level and a
high loudness level, and said intermediate loudness level being measured for a larger
number of frequencies or frequency bands and with a finer frequency resolution than
said low and high loudness levels; calculating an individual gain function to be implemented
in the audio signal processing unit in order to achieve the predefined target loudness
function by taking into account the measured transducer input audio signal levels;
and operating the hearing instrument with the individual gain function.
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