摘要:
A hearing aid comprises a power supply, a microphone and a base part to be arranged outside the ear canal of a hearing aid user, and an ear plug part to be arranged in the ear canal of a hearing aid user. The ear plug part comprises a receiver for transmitting sound into the ear canal, and a transducer generating a signal to be transferred to said base part. A databus connects the ear plug part with the base part. The databus comprises two electrical wires adapted for transmission of signal to the receiver, and for transmission of signal from the transducer to the base part. The databus provides power supply either from the base part to the ear plug part, or, from the ear plug part to the base part. The invention further provides a method for communicating between two parts of a hearing aid.
摘要:
A personal wearable EEG monitor comprises a base part (1) having signal processing means (23), and an electrode part (2) with at least two electrodes (11, 12) for measuring an EEG signal of a person. The electrode part (2) comprises means for converting the EEG signal into a digital signal. The EEG monitor comprises a databus for transferring data between the base part (1) and the electrode part (2) and for providing power from one part to the other. The databus is adapted for application of two electrical wires. The invention further provides a method for communicating between two parts of an EEG monitor.
摘要:
A hearing aid comprising a time domain codec. The codec comprises a decoder adapted to generate a decoded output signal based on an input quantization index and an encoder for generating an output quantization index based on an input signal, said encoder comprising said decoder and a predictor receiving an excitation signal derived from said decoder output signal and outputting a prediction signal. The output quantization index is determined by repeated decoding of the quantization indices in order to minimize the error between the input signal and the prediction signal, and the predictor uses a recursive autocorrelation estimate for the error minimization. The invention further provides a method of encoding an audio signal.
摘要:
A hearing aid system comprising means (304) for receiving a multi-channel digitally encoded audio signal (301) and means (306) for rendering said received multi-channel signal into a binaural stereo signal. The invention further provides a method for replaying audio streams in hearing aids.
摘要:
A system for remote surveillance of an EEG signal of a person susceptible of having a hypoglycemic seizure comprises an EEG sensor part with electrodes for measuring one or more EEG signals from the person, and a processing unit adapted to be arranged at the ear of said person. EEG signal processing means is adapted for analyzing the EEG signal, for identifying or predicting a hypoglycemic seizure in the person. The system comprises a first connection between the EEG sensor part and the processing unit, adapted for transmitting an EEG signal from the implantable EEG sensor to the processing unit. The system comprises an external part adapted to receive wirelessly an alarm from the processing part, where the external part is adapted to forward an alarm to a care-giver. The invention further provides a method of EEG surveillance.
摘要:
A portable monitoring device comprises a hearing aid having a housing, a microphone (24), an acoustic signal processing means (43), and an acoustic output transducer (33). The portable monitoring device further comprises an EEG monitoring system arranged at least partly in said housing, and comprising a measuring unit (3) having electrodes (12) arranged external to the housing. The EEG monitoring system comprises a processing unit (42) for analyzing the EEG signal for identifying or predicting specific biological incidences, such as a seizure, in said person, decision means for deciding, based on said analyzed EEG signal, when an alarm or information must be provided to said person, and means for providing said alarm or information through said output transducer (33). The invention further provides a method of monitoring an EEG signal of a hearing impaired person.
摘要:
A hearing aid is provided which has at least one input transducer for providing an input signal, at least one signal processing channel receiving at least a portion of said input signal, a hearing aid processor for processing said portion of said input signal to produce at least one output signal, an output transducer responsive to said output signal, and a data logger receiving said portion of said input signal for logging of input signal data. The data logger comprises a characterisation unit for characterising and logging parameters of the input signal data, and a memory unit for storing said parameters.