A HEARING DEVICE COMPRISING A FEEDBACK DETECTION UNIT

A hearing device, e.g. a hearing aid, comprises a forward path for processing an electric signal representing sound including a) an input unit for receiving or providing an electric input signal representing sound, b) a signal processing unit, c) an output transducer for generating stimuli perceivab...

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Bibliographische Detailangaben
Hauptverfasser: GUO, Meng, KUENZLE, Bernhard, KURIGER, Martin
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A hearing device, e.g. a hearing aid, comprises a forward path for processing an electric signal representing sound including a) an input unit for receiving or providing an electric input signal representing sound, b) a signal processing unit, c) an output transducer for generating stimuli perceivable as sound to a user, d) a feedback detection unit configured to detect feedback or evaluate a risk of feedback via an acoustic or mechanical or electrical feedback path from said output transducer to said input unit and comprising d1) a magnitude and phase analysis unit for repeatedly determining magnitude, Mag, and phase, Phase, and loop phase difference, LpPhaseDiff, of said electric input signal and optionally further parameters based thereon, and d2) a feedback conditions and detection unit configured to check criteria for magnitude and phase feedback condition, respectively, based on said values, and to provide a feedback detection signal indicative of feedback or a risk of feedback.