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 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:
The present invention relates to a hearing aid comprising a housing, at least a first microphone for receiving ambient sound, processing means for processing a signal from the first microphone, and an output transducer. At least one further microphone is disposed in said hearing housing at a location, which , during normal use of the hearing aid, is sheltered against wind influences.
摘要:
An EEG monitoring apparatus (2) adapted to be carried continuously by a person being monitored comprises means adapted for measuring at least one EEG signal from the person carrying the apparatus and a signal processing means for analysing said at least one EEG signal and adapted to identify or predict predetermined biological incidents in said person based on said analysis. The EEG monitoring apparatus (2) further comprises a decision means adapted to decide when information is to be presented to said person and a message selection means for selecting a voice message providing said person with information, as well as an acoustic transducer adapted for presenting the selected voice message to the person. The invention also provides a method for presenting voice messages.
摘要:
A directional hearing aid (100) comprising at least two microphones (201, 202) has means (200) for matching differences in amplitude and phase between the two microphones (201, 202). The microphone matching means (200) compare differences between measured transfer functions of the microphone signal paths at a number of frequencies during use of the hearing aid (100), compares the differences to differences at similar frequencies in a model of the transfer functions of the microphone signal paths, derives a set of parameters based on the comparison, and adjusts the parameters in order to minimize the difference in level differences between the model and the microphones (201, 202). The model is then used to match the microphones (201, 202) mutually by applying appropriate control parameters (103, 104, 105, 106) to an adaptive matching filter (108) carrying one of the microphone signals.
摘要:
The present invention relates to a hearing aid comprising a housing, at least a first microphone for receiving ambient sound, processing means for processing a signal from the first microphone, and an output transducer. At least one further microphone is disposed in said hearing housing at a location, which , during normal use of the hearing aid, is sheltered against wind influences.
摘要:
A portable electronic device (100) comprises a fuel cell (101) and a boost converter (102), wherein said boost converter (102) is adapted for boosting the fuel cell voltage a level suitable to power the portable electronic device (100) and wherein said boost converter (102) is powered by said fuel cell (101). The invention also provides a method of operating a portable electronic device.
摘要:
A personal wearable EEG monitor (1) is adapted to be carried at the head of a person. The EEG monitor comprises an EEG sensor part having skin surface electrodes (3) for measuring EEG signals from said person. The EEG monitor comprises an EEG signal analyzer (5, 5′) adapted for monitoring and analyzing the EEG signal. The EEG monitor (1) performs at least one of the following: providing a stimulus to the person, requesting the person to perform a stimuli creating act, or identifying a stimuli creating ambient sound. The EEG monitor comprises means for identifying an induced response from the EEG signal caused by the stimuli, and a classifier for deciding whether the skin surface electrodes receive EEG signals. The invention further provides a method of monitoring EEG signals of a person.