公开(公告)号：US20210400400A1

公开(公告)日：2021-12-23

申请号：US17352534

申请日：2021-06-21

Applicant: Sivantos Pte. Ltd.

Inventor： Gabriel Gomez

IPC: H04R25/00

Abstract: A hearing aid system assists a user's ability to hear. The system has a hearing aid instrument worn on the user's head. A sound signal from the user's surroundings is recorded and converted into input audio signals by two input transducers. The input audio signals are processed in a signal processing step for generating an output audio signal, which is output by an output transducer. The input audio signals or audio signals derived therefrom by pre-processing are direction-dependently damped by an adaptive beamformer according to the stipulation of a variable directivity with a directional strength to generate a directed audio signal. The directivity is varied with a specified adaptation speed such that the energy content of the directed audio signal is minimized. The adaptation speed and/or the directional strength are variably set on a basis of an analysis of the input audio signals or of the pre-processed audio signals.

公开(公告)号：US11570557B2

公开(公告)日：2023-01-31

申请号：US17352530

申请日：2021-06-21

Applicant: SIVANTOS PTE. LTD.

Inventor： Gabriel Gomez

IPC: H04R25/00 ,  G10L25/51

Abstract: In a method for direction-dependent noise rejection for a hearing system, first and second input transducers are used to generate an interference signal and a target signal from a sound from the surroundings. The interference signal and/or the target signal are referenced to a useful signal source arranged in a target direction. The target signal is generated with a target directivity pattern. For each of a first plurality of frequency bands, an acoustic characteristic of the target signal is compared with a corresponding acoustic characteristic of the interference signal, and the comparison is used to ascertain a provisional weighting factor. The provisional weighting factor is used to form for the frequency band a weighting factor for the respective frequency bands. An input signal to be processed is weighted on a frequency-band-by-frequency-band basis using the respective weighting factor, and the weighted input signal is used to generate an output signal.

公开(公告)号：US11665486B2

公开(公告)日：2023-05-30

申请号：US17352534

申请日：2021-06-21

Applicant: Sivantos Pte. Ltd.

Inventor： Gabriel Gomez

IPC: H04R25/00

CPC classification number: H04R25/407 ,  H04R25/405 ,  H04R25/505 ,  H04R2225/021 ,  H04R2225/43

Abstract: A hearing aid system assists a user's ability to hear. The system has a hearing aid instrument worn on the user's head. A sound signal from the user's surroundings is recorded and converted into input audio signals by two input transducers. The input audio signals are processed in a signal processing step for generating an output audio signal, which is output by an output transducer. The input audio signals or audio signals derived therefrom by pre-processing are direction-dependently damped by an adaptive beamformer according to the stipulation of a variable directivity with a directional strength to generate a directed audio signal. The directivity is varied with a specified adaptation speed such that the energy content of the directed audio signal is minimized. The adaptation speed and/or the directional strength are variably set on a basis of an analysis of the input audio signals or of the pre-processed audio signals.

公开(公告)号：US11570554B2

公开(公告)日：2023-01-31

申请号：US17352533

申请日：2021-06-21

Applicant: SIVANTOS PTE. LTD.

Inventor： Gabriel Gomez

IPC: H04R25/00

Abstract: A hearing aid system for assisting a user's ability to hear includes at least one hearing aid instrument worn on the user's head. A sound signal from the surroundings is recorded and converted into input audio signals by input transducers of the hearing aid system. The hearing aid system includes two adaptive beamformers with variable notch direction, applied indirectly or directly to the input audio signals to generate direction-dependently damped audio signals. The notch directions are set to mutually different values to minimize the energy content of the direction-dependently damped audio signal of each beamformer. The notch directions of the two beamformers are evaluated in comparative fashion. A user's head rotation is captured qualitatively and/or quantitatively if a correlated change in the notch directions is determined within the scope of the comparative evaluation. A method for operating the hearing aid system is also provided.