HEARING SYSTEM FOR ESTIMATING A FEEDBACK PATH OF A HEARING DEVICE
First Claim
1. A hearing system comprisinga hearing device (HD), anda programming device (PD),the hearing device comprisingan input transducer (IT) for converting an input sound to an electric input signal, andan output transducer (OT) for converting a processed electric signal to an output sound,a forward path between the input transducer and the output transducer, the forward path comprising a signal processing unit (SPU) for applying a level and/or frequency dependent gain to a signal of the forward path and providing a processed output signal,a feedback path analyzer (FPA) for providing an estimate of a feedback path from the output transducer to the input transducer, the hearing device (HD) and the programming device (PD) each comprising a programming interface (PI, PD-PI) allowing the exchange of data between the devices,whereinthe feedback path analyzer (FPA) is located in the programming device (PD), andthe hearing device (HD) comprises respective input (IBUF) and output (OBUF) buffers for storing corresponding input and output time segments of the electric input signal or a signal derived therefrom and of the processed output signal or a signal derived therefrom, respectively, and whereinthe hearing device (HD)—
- in a specific feedback measurement mode—
is configured to transmit said stored input and output time segments of the respective signals to the feedback path analyzer (FPA) of the programming device (PD) via said programming interface (PI, PD-PI), and whereinthe feedback path analyzer (FPA) in said specific feedback measurement mode—
is configured to determine said estimate of the feedback path based on said input and output time segments.
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Abstract
The application relates to a hearing system comprising a hearing device (HD), and a programming device (PD), and a feedback path analyzer (FPA) for providing an estimate of a feedback path from an output transducer to an input transducer of the hearing device. The hearing device (HD) and the programming device (PD) each comprises a programming interface (PI, PD-PI) allowing the exchange of data between the devices. The feedback path analyzer (FPA) is located in the programming device (PD), and the hearing device (HD) comprises respective input (IBUF) and output (OBUF) buffers for storing corresponding input and output time segments of the electric input signal or a signal derived therefrom and of the processed output signal or a signal derived therefrom, respectively. The hearing device (HD)—in a specific feedback measurement mode—is configured to transmit said stored input and output time segments of the respective signals to the feedback path analyzer (FPA) of the programming device (PD) via said programming interface (PI, PD-PI), and the feedback path analyzer (FPA) is configured to determine said estimate of the feedback path based on said (stored) input and output time segments. Thereby a more accurate estimation and/or a shorter measurement time can be achieved. The invention may e.g. be used for the fitting of hearing devices, e.g. hearing aids, to a particular use or user.
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Citations
17 Claims
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1. A hearing system comprising
a hearing device (HD), and a programming device (PD), the hearing device comprising an input transducer (IT) for converting an input sound to an electric input signal, and an output transducer (OT) for converting a processed electric signal to an output sound, a forward path between the input transducer and the output transducer, the forward path comprising a signal processing unit (SPU) for applying a level and/or frequency dependent gain to a signal of the forward path and providing a processed output signal, a feedback path analyzer (FPA) for providing an estimate of a feedback path from the output transducer to the input transducer, the hearing device (HD) and the programming device (PD) each comprising a programming interface (PI, PD-PI) allowing the exchange of data between the devices, wherein the feedback path analyzer (FPA) is located in the programming device (PD), and the hearing device (HD) comprises respective input (IBUF) and output (OBUF) buffers for storing corresponding input and output time segments of the electric input signal or a signal derived therefrom and of the processed output signal or a signal derived therefrom, respectively, and wherein the hearing device (HD)— - in a specific feedback measurement mode—
is configured to transmit said stored input and output time segments of the respective signals to the feedback path analyzer (FPA) of the programming device (PD) via said programming interface (PI, PD-PI), and whereinthe feedback path analyzer (FPA) in said specific feedback measurement mode—
is configured to determine said estimate of the feedback path based on said input and output time segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- in a specific feedback measurement mode—
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16. A hearing device comprising
an input transducer for converting an input sound to an electric input signal, and an output transducer for converting a processed electric signal to an output sound, a forward path between the input transducer and the output transducer, the forward path comprising a signal processing unit (SPU) for applying a level and/or frequency dependent gain to a signal of the forward path and providing a processed output signal, a programming interface allowing the exchange of data between the hearing device and a programming device comprising a feedback path analyzer for providing an estimate of a feedback path from the output transducer to the input transducer, an input buffer and an output buffer for storing corresponding input and output time segments of the electric input signal or a signal derived therefrom and of the processed output signal or a signal derived therefrom, respectively, and wherein the hearing device— - in a specific feedback measurement mode—
is configured to transmit said stored input and output time segments of the respective signals to the feedback path analyzer of the programming device via said programming interface, and to receive said estimate of the feedback path based on said input and output time segments from said feedback path analyzer of the programming device via said programming interface. - View Dependent Claims (17)
- in a specific feedback measurement mode—
Specification