| 主权项 |
1. A system for stimulation of a patient's ipsilateral cochlea (200), comprising
at least two spaced apart microphones (20, 20A, 60, 60A, 160, 160A, 220, 220A) worn by the patient for providing a first input audio signal and a second audio signal from ambient sound, respectively; a sound processor (24) for generating an ipsilateral auditory nerve stimulation signal in a plurality of output channels from at least one of the input audio signals; and a stimulation assembly (19) for being implanted within the ipsilateral cochlea and having a plurality of stimulation channels for ipsilateral stimulation of the patient's hearing according to the ipsilateral auditory nerve stimulation signal,
the sound processor comprising a direction of arrival (DOA) unit (66) for determining periodically a main direction of incidence of ambient sound from a sound source by analyzing the first and second audio signals, and a directional information coding unit (68) for coding information concerning the determined main direction of incidence in the ipsilateral auditory nerve stimulation signal in manner so as to render said directional information perceivable by the patient in order to enable the patient to localize the sound source by ipsilateral cochlear stimulation. |
