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US 10,455,332 B2Granted
Hearing aid system and a method of operating a hearing aid system
AssigneeWidex A/S
InventorLars Baekgaard Jensen
Life of this patent
Estimating the term…
Abstract
A method (300) of operating a hearing aid system (100), wherein the dynamic range of input signal levels is improved by reducing the sensitivity of an input transducer in response to a trigger event while at the same time applying a gain adapted to compensate the reduced sensitivity and a hearing aid system (100, 200) adapted to carry out the method.
Claims20
A method of operating a hearing aid system comprising the steps of:
- providing an input signal from an input transducer;
- reducing the sensitivity of the input transducer in response to the input signal fulfilling a first criterion;
- applying a positive gain to the input signal, in coordination with the acoustical-electrical input transducer is operating with reduced sensitivity, such that the reduced sensitivity of the input transducer is compensated, whereby the dynamic range of the hearing aid system is improved;
- and
- returning to operating the input transducer with normal sensitivity and removing said positive gain in response to the input signal fulfilling a second criterion.
2 more elements
A hearing aid system comprising:
- an input transducer with adjustable sensitivity,
- a signal level estimator adapted to provide a level estimate of an input signal provided by the input transducer;
- a sensitivity calculator adapted to determine a magnitude of a reduction in input transducer sensitivity in accordance with a pre-determined or adaptive relationship between the estimated input signal level and the magnitude of the reduction of input transducer sensitivity, and adapted to determine a positive gain to be applied to the input signal in order to compensate the determined reduction in input transducer sensitivity;
- a gain multiplier adapted to apply the positive gain to the input signal;
- and
- an input transducer sensitivity controller adapted to control the adjustable sensitivity of the input transducer in accordance with the determined magnitude of the reduction input transducer sensitivity.
3 more elements
A non-transitory computer-readable medium storing instructions thereon, which when executed by a computer perform the following method:
- providing an input signal from an input transducer;
- reducing the sensitivity of the input transducer in response to the input signal fulfilling a first criterion;
- applying a positive gain to the input signal, in coordination with the acoustical-electrical input transducer operating with reduced sensitivity, such that the reduced sensitivity of the input transducer is compensated, whereby the dynamic range of the hearing aid system is improved;
- and
- returning to operating the input transducer with normal sensitivity and removing said positive gain in response to the input signal fulfilling a second criterion.
2 more elements
Dependencies are inferred from the claim text.