Disclosed herein are systems and methods for eardrum acoustic pressure estimation for hearing device applications. A receiver signal is produced through a receiver of a hearing device, or a physical extension of the receiver, placed inside an ear canal of a user. A microphone signal is sensed, in response to the receiver signal, using a microphone placed outside the ear canal. Based on the receiver signal and the microphone signal, a reliability signal of the microphone signal and a feedback-path signal are computed. A spectral representation signal of the feedback-path signal is computed, and a real-ear response signal is computed using a mathematical combination of the spectral-representation signal and the reliability signal. The computed real-ear response signal is used to modify an operational characteristic of the hearing device, or to make a recommendation for modification of an operational characteristic or a physical characteristic of the hearing device.

Secondary path measurements and associated acoustic transducer-to-eardrum responses are obtained from test subjects. Both a least squares estimate and a reduced dimensionality estimate are determined that both estimate a relative transfer function between the secondary path measurements and the associated acoustic transducer-to-eardrum responses. An individual secondary path measurement for a user is performed based on a test signal transmitted via a hearing device into an ear canal of the user. An individual cutoff frequency for the individual secondary path measurement is determined. First and second acoustic transducer-to-eardrum responses below and above the cutoff frequency are determined using the individual secondary path measurement and the least squares estimate. A sound pressure level at an eardrum of the user can be predicted using the first and second receiver-to-eardrum responses.

The present disclosure provides methods and systems for detecting the state of a bone conduction hearing device. The bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit. The speaker may generate a third sound based on a first signal, wherein the first signal may be generated by the signal processing unit. The microphone may receive the third sound and generate a feedback signal. The feedback analysis unit may determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain at least one preset feedback path transfer function, and compare the feedback path transfer function and the at least one preset feedback path transfer function. The signal processing unit may determine the state of the bone conduction hearing device based on a comparison result.

Disclosed herein are systems and methods for automatic correction of real ear measurements (REMs). A sound signal is produced through a receiver of a hearing device, and a sound pressure signal is sensed using a microphone placed inside the ear canal. The sound pressure signal is transformed to obtain a frequency response signal, a local minimum of the frequency response signal is detected above a programmable frequency level, and a spectral flatness of the frequency response signal is calculated in a selected frequency band surrounding the local minimum. If the spectral flatness is greater than a selected threshold value, acoustic correction is applied to the frequency response in the selected frequency band using an estimated transfer function to obtain a corrected sound pressure frequency response. The corrected sound pressure frequency response is used to modify, or make a recommendation to modify, a physical or operational characteristic of the hearing device.

A binaural hearing aid system comprises left and right hearing instruments each comprising a BTE-part comprising a housing configured to be located at or behind an outer ear of the user and an acceleration sensor configured to measure acceleration in at least two directions relative to the housing of the BTE-part and to provide acceleration data indicative thereof. A first one of the left and right hearing instruments comprises a transmitter configured to transmit said acceleration data to the other hearing instrument, and the other hearing instrument comprises a receiver for receiving said acceleration data from the first one of the hearing instruments. The other hearing instrument further comprises a controller for detecting whether or not the left and right hearing instruments are correctly mounted in dependence of a similarity measure between said acceleration data provided by the left and right hearing instruments. A method of operating a binaural hearing aid system is further disclosed.

A method of operating a hearing assistive device having a rechargeable battery, and comprises reading battery status data from a battery controller during use of the hearing assistive device, transferring the battery status data wirelessly from the hearing assistive device to a computing device and predicting, in the computing device, a remaining battery time for the rechargeable battery based upon the battery status data received. Once the remaining battery time is predicted, it is compared with a predefined use pattern for hearing assistive device and a user becomes notified if a conflict between the remaining battery time and the predefined use pattern is observed.

A method, including an action of receiving first data based on data based on ambient sound captured with a first microphone, and further including an action of receiving second data based on data based on the ambient sound captured with a second microphone, wherein the first microphone is a part of a hearing prosthesis, the second microphone is part of an indoor sound capture system or indoor sound capture sub-system, and the method further comprises comparing the first data to the second data.

Aspects of the present disclosure provide methods and apparatuses for determining a nozzle of an audio device is, at least partially blocked. More specifically, based on a measured transfer function between the driver and a microphone and an expected transfer function between the driver and the microphone, a blockage is detected. In response to the detected blockage, the user is notified.

A hearing aid system for generating processed audio signals may include at least one processor. The processor may be configured to receive an audio signal representative of the sounds captured by the at least one microphone; generate a processed audio signal based on analysis of the audio signal; determine a quality degradation of at least one aspect of the processed audio signal; and provide an auditory cue to the user indicating the quality degradation.

The present invention is directed to a hearing aid which includes a lateral ear canal assembly and a medial ear canal assembly. In embodiments of the invention the medial ear canal assembly may include smart circuitry adapted to control parameters and outputs of the medial ear canal assembly. In embodiments of the invention various methods and circuitry are described, wherein the methods and circuitry are adapted to improve the performance and efficiency of the hearing aid.