公开(公告)号：US20200275217A1

公开(公告)日：2020-08-27

申请号：US16801832

申请日：2020-02-26

Applicant: Oticon A/S

Inventor： Meng GUO ,  Bernhard KUENZLE ,  Martin KURIGER

IPC: H04R25/00 ,  H03G3/30

Abstract: A hearing device comprises an input transducer providing an input gain GI, a signal processor comprising a compressor for determining a frequency and level dependent desired compressor gain GP to compensate for a hearing impairment of the user, and to provide a resulting compressor gain G′P, and an output transducer for providing output stimuli perceivable as sound for the user based on a processed signal, the output transducer providing an output gain, GO. A resulting forward path gain G′ is defined in a logarithmic representation as GI+G′P+GO. The hearing device further comprises a loop gain estimator for continuously estimating a current loop gain ΔL(n), configured to provide a loop gain estimate within a predefined number of feedback loop delays after a feedback buildup has started, and a loop gain controller for dynamically controlling said resulting forward path gain G′ in dependence of said estimate of said current loop gain ΔL(n). A resulting loop gain, LG′, is determined as a sum of the resulting forward path gain G′ and a feedback gain H when given in a logarithmic representation. The loop gain controller is configured to provide that the resulting loop gain is limited to stay below a predefined value.

公开(公告)号：US20190253817A1

公开(公告)日：2019-08-15

申请号：US16270784

申请日：2019-02-08

Applicant: Oticon A/S

Inventor： Susanna Løve CALLAWAY ,  Nicolas LE GOFF ,  Terri IVES ,  Nimrod BOGDANOVSKI ,  Mikkel Bo RASMUSSEN ,  Anders MENG ,  Martin KURIGER ,  Meng GUO ,  Mikkel GRØNBECH ,  Mojtaba FARMANI ,  Nels Hede ROHDE ,  Stefan GRAM ,  Sudershan Yalgalwadi SREEPADARAO ,  Bernhard KUENZLE

IPC: H04R25/00

CPC classification number: H04R25/70 ,  H04R25/453 ,  H04R2225/55

Abstract: A method of conducting a fitting session for fitting a hearing device to a hearing device user's needs is provided. The method comprises S1. providing an estimate of, a current feedback from said output transducer to said input transducer, while the hearing device is in an operational state; S2. evaluating said estimate of a current feedback and providing a value of a feedback risk indicator in dependence of said estimate of a current feedback; S3. determining whether said value of the feedback risk indicator fulfils a high-risk criterion; and S4. if said high-risk criterion is fulfilled providing at least one of a warning, a recommendation, and an action in relation to said feedback risk. Steps S1 to S4 are configured to be automatically performed as background processes.Thereby a simplified scheme for fitting a hearing device to a user's needs may be provided.