System and method for validation of hearing aids for infants using a speech signal
AssigneeInteracoustics A/S
InventorsBue Kristensen, Søren Laugesen
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Abstract
A system for validation of a hearing aid performance, especially in small children is disclosed. The validation of the performance of hearing aids after having being fitted to a small child who is not able to subjectively provide responses to sounds presented to the child via the hearing aids, is instead done in an objective manner, by using a naturally occurring signal, which has been modulated in order to create an ASSR evoking speech stimulus which is not considered as noise by a hearing aid.
Claims14
A system configured to perform at least a validation mode of a hearing test, said system comprising:
- a diagnostic device;
- one or more electrodes configured to be arranged on the scalp of a person and configured to be connected to said diagnostic device;
- and
- a sound emitting device configured to be connected to said diagnostic device and to transmit a generated sound stimulus into the ear of a person,
- wherein the diagnostic device includes
- a recording processor configured to receive a response signal from said one or more electrodes arranged on the scalp of a person;
- a control unit configured to control the mode of operation of said diagnostic device;
- and
- a signal generator configured to transmit said generated stimulus to said sound emitting device,
- wherein, in a validation mode of operation
- said diagnostic device is configured to
- record and/or receive a recording of a naturally occurring sound provided as naturally occurring speech from a human person, and
- input said recording of the natural occurring sound to said signal generator, and
- said signal generator is configured to generate from said recording of the natural occurring sound, an amplitude and/or frequency modulation of said recording as said generated sound stimulus by
- filtering said recording of the naturally occurring sound into a plurality of frequency sub-bands;
- amplitude and/or frequency modulating each of said plurality of frequency sub-bands;
- and
- combining said amplitude and/or frequency modulated sub-bands to form said sound stimulus,
- wherein said recording of the naturally occurring sound is recorded via the diagnostic device and/or is transmitted wired or wirelessly to said diagnostic device from an auxiliary device
- wherein said signal generator is configured to set an amplitude and/or frequency modulation factor for one or more of said plurality of sub-bands to 0, so as to leave said respective sub-band unmodified when generating said sound stimulus, and
- wherein a naturally occurring speech signal is defined as an unprocessed speech signal existing naturally in the environment of humans.
System according to claim l, wherein each of said amplitude and/or frequency modulated frequency sub-bands are adjusted in magnitude to align with a predetermined value.
Dependencies are inferred from the claim text.