Hearing instrument with interruptable microphone power supply

摘要

A hearing instrument includes: a first microphone; and a control and processing circuit comprising: a first audio input channel configured to receive a first microphone signal, a second audio input channel configured for receipt of an audio signal, a signal processor for receipt and processing of the first microphone signal and the audio signal according to a hearing loss of a user, a power supply configured to provide a first microphone supply voltage for the first microphone, a first controllable switch comprising a first switch control terminal, the first controllable switch configured to selectively connect the first microphone supply voltage to, and disconnect the first microphone supply voltage from, the first microphone in accordance with a first switch control signal, and a first output port configured to provide the first switch control signal to the first switch control terminal.

主权项

1. A hearing instrument for use by a user, comprising:
a first microphone for generation of a first microphone signal in response to receipt of sound, the first microphone comprising a positive power supply terminal and a negative power supply terminal; and a control and processing circuit comprising:
a first audio input channel configured to receive the first microphone signal,a second audio input channel configured for receipt of an audio signal,a signal processor for receipt and processing of the first microphone signal and the audio signal according to a hearing loss of the user,a power supply configured to provide a first microphone supply voltage for the first microphone,a first controllable switch comprising a first switch control terminal, the first controllable switch configured to selectively connect the first microphone supply voltage to, and disconnect the first microphone supply voltage from, the first microphone in accordance with a first switch control signal, anda first output port configured to provide the first switch control signal to the first switch control terminal;wherein the signal processor is configured to set a logic state of the first output port based on at least one processing parameter used to process the first microphone signal;wherein the control and processing circuit further comprises a plurality of preset listening programs utilizing different processing parameters in the signal processor to process at least the first microphone signal; andwherein the control and processing circuit is configured to connect and disconnect at least the first microphone supply voltage via the first output port in accordance with a selected one of the preset listening programs.