Patent ID: 11895467
Assignee: STARKEY LABORATORIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A hearing device operable to be fitted into an ear canal of an individual, comprising:
a memory configured to store a least squares estimate and a reduced dimensionality estimate that that both estimate a relative transfer function between secondary path measurements and associated acoustic transducer-to-eardrum response of the hearing device;
an inward-facing microphone configured to receive internal sound inside of the ear canal;
an acoustic transducer configured to produce amplified sound inside of the ear canal;
a processor coupled to the memory, the inward-facing microphone, and the acoustic transducer, the processor operable via instructions to:
determining a cutoff frequency for the individual based on a secondary path measurement performed on the individual;
determining a first acoustic transducer-to-eardrum response below the cutoff frequency using the secondary path measurement and the least squares estimate;
determining a second acoustic transducer-to-eardrum response above the cutoff frequency using the secondary path measurement and the reduced dimensionality estimate; and
predicting a sound pressure level caused by the hearing device at an eardrum of the individual using the first and second acoustic transducer-to-eardrum responses.