Abstract: A processing chip for processing audio signals using at least one deep neural network in a hearing device includes a first compute unit having a hardware architecture adapted for processing one or more convolutional neural network layers of the at least one deep neural network, a second compute unit having a hardware architecture adapted for processing one or more recurrent neural network layers of the at least one deep neural network, a shared memory unit for storing data to be processed in respective layers of the at least one deep neural network, the shared memory unit comprising a memory controller configured for running on a memory controller clock frequency that is higher than a compute unit clock frequency of both the first compute unit and the second compute unit, and a data bus system for providing access to the shared memory unit.

Abstract: A hearing system includes an input unit for obtaining an input audio signal, a processing unit for processing the input audio signal to obtain an output audio signal, and an output unit for outputting the output audio signal. The processing unit comprises: a first audio signal path having a noise cancellation unit for obtaining a target audio signal from the input audio signal, the noise cancellation unit comprising a neural network for contributing to obtaining the target audio signal, a second audio signal path bypassing the noise cancellation unit, and a mixing unit for mixing the target audio signal from the first audio signal path with audio signals from the second audio signal path for obtaining the output audio signal. The mixing unit is configured to adjust a contribution of the target audio signal to the output audio signal based on a user-set noise cancellation strength.

Abstract: A hearing system includes an input unit for obtaining an input audio signal, a processing unit for processing the input audio signal to obtain an output audio signal, and an output unit for outputting the output audio signal. The processing unit includes a first audio signal path having a noise cancellation unit for obtaining a target audio signal from the input audio signal, the noise cancellation unit comprising a neural network for contributing to obtaining the target audio signal, a second audio signal path bypassing the noise cancellation unit, and a mixing unit for mixing the target audio signal from the first audio signal path with audio signals from the second audio signal path for obtaining the output audio signal, wherein the second audio signal path comprises a delay compensation unit for compensating processing times in the first audio signal path.

Abstract: A hearing system comprises at least one hearing device having an input unit for obtaining an input audio signal, a processing unit for processing the input audio signal to obtain an output audio signal, and an output unit for outputting the output audio signal. The hearing system further comprises an estimation unit for estimating a signal property of the input audio signal. The processing unit comprises a first audio signal path having a noise cancellation unit for obtaining a target audio signal from the input audio signal, a second audio signal path bypassing the noise cancellation unit and a mixing unit for mixing the target audio signal with audio signals from the second audio signal path for obtaining the output audio signal. The mixing unit is configured to adjust the contribution of the target audio signal to the output audio signal.

Abstract: A processing chip for processing audio signals using at least one deep neural network (DNN) in a hearing device comprises a first compute unit having a hardware architecture adapted for processing one or more convolutional neural network layers of the at least one DNN, a second compute unit having hardware architecture adapted for processing one or more recurring neural network layers of the at least DNN, a control unit for directing the first and second compute units when to compute a respective layer of the at least one DNN, a shared memory unit of storing data to be processed in respective layers of the at least one DNN, and a data bus system for providing access to the shared memory unit for each of the first and the second compute unit.

Abstract: A processing chip for processing audio signals using at least one deep neural network (DNN) in a hearing device comprises a first compute unit having a hardware architecture adapted for processing one or more convolutional neural network layers of the at least one DNN, a second compute unit having hardware architecture adapted for processing one or more recurring neural network layers of the at least DNN, a control unit for directing the first and second compute units when to compute a respective layer of the at least one DNN, a shared memory unit of storing data to be processed in respective layers of the at least one DNN, and a data bus system for providing access to the shared memory unit for each of the first and the second compute unit.

Abstract: This invention relates to a method of managing adaptive feedback cancellation in a hearing device comprising at least a microphone (1); a receiver (2); and a signal processing circuitry, configured to receive from said microphone (1) an input signal (Xtd, Xfd, Xc) and to provide said receiver (2) with an output signal (Yfd, Ufd, Utd). An external acoustic feedback path (300) defined by feedback sound (fb) traveling from the receiver (2) to the microphone (1) is represented by an external feedback path transfer function (3). The signal processing unit comprises at least a gain unit (4); a feedback canceller unit (5) comprising an adaptive filter element (6) configured to adaptively accommodate changes in said external acoustic feedback path transfer function (3); and a frequency shift unit (7) configured to stabilize an adaptation of the feedback canceler unit (5).

Abstract: This invention relates to a method of managing adaptive feedback cancellation in a hearing device comprising at least a microphone (1); a receiver (2); and a signal processing circuitry, configured to receive from said microphone (1) an input signal (Xtd, Xfd, Xc) and to provide said receiver (2) with an output signal (Yfd, Ufd, Utd). An external acoustic feedback path (300) defined by feedback sound (fb) traveling from the receiver (2) to the microphone (1) is represented by an external feedback path transfer function (3). The signal processing unit comprises at least a gain unit (4); a feedback canceller unit (5) comprising an adaptive filter element (6) configured to adaptively accommodate changes in said external acoustic feedback path transfer function (3); and a frequency shift unit (7) configured to stabilize an adaptation of the feedback canceler unit (5).

Abstract: A thermoelectric generator for converting heat of a hot gas flow into electric energy can include at least one thermoelectric module with a plurality of thermoelectric elements. A gas channel on a high-temperature side of the thermoelectric module can conduct the hot gas flow in a flow direction of the gas channel. A heat sink can cool the thermoelectric module and be in contact with the thermoelectric module on a low-temperature side thereof. At least one heat conducting body can extend into the gas channel in a direction running transversely to the flow direction on the high-temperature side of the thermoelectric module and can have a free end within the gas channel. The heat conducting body can be part of the thermoelectric module or connected thereto on the high-temperature side. The thermoelectric generator can have a seal which separates an area between the heat sink and the gas channel from the gas channel and seals the area from the hot gas flow.

Abstract: An internal combustion engine has at least one combustion chamber and an exhaust gas system arranged on an exhaust gas outlet port. The exhaust gas system includes at least one secondary air injection device for injecting secondary air into the exhaust system between the combustion chamber and an exhaust emission control system arranged in the exhaust gas system. During operation of the internal combustion engine, a residual gas content in the combustion chamber can be changed. The secondary air injection site on the exhaust gas system is arranged so far from the combustion chamber that injected secondary air flows back into the exhaust gas outlet port due to back-flowing exhaust gas in the exhaust gas system but does not flow back into the combustion chamber. This makes it possible to comply with SULEV emission limits even for engines having many combustion chambers and/or exhaust gas turbochargers.

Abstract: An exhaust gas system, in particular for an internal combustion engine, includes an exhaust gas line. The exhaust gas line has at least one turbocharger and a thermoelectric converter arrangement which is arranged downstream of the turbocharger in the flow direction of an exhaust gas and which includes a thermoelectric converter stage. The exhaust gas line is paired with at least one bypass line, which branches out from the exhaust gas line upstream of the turbocharger in an exhaust gas-conductive manner in order to discharge at least one part of the exhaust gas into the at least one bypass line. The at least one bypass line opens into the exhaust gas line downstream of the thermoelectric converter stage in an exhaust gas-conductive manner.

Abstract: An internal combustion engine has at least one combustion chamber and an exhaust gas system arranged on an exhaust gas outlet port. The exhaust gas system includes at least one secondary air injection device for injecting secondary air into the exhaust system between the combustion chamber and an exhaust emission control system arranged in the exhaust gas system. During operation of the internal combustion engine, a residual gas content in the combustion chamber can be changed. The secondary air injection site on the exhaust gas system is arranged so far from the combustion chamber that injected secondary air flows back into the exhaust gas outlet port due to back-flowing exhaust gas in the exhaust gas system but does not flow back into the combustion chamber. This makes it possible to comply with SULEV emission limits even for engines having many combustion chambers and/or exhaust gas turbochargers.