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Hearing instrument with switchable power supply voltage

A technology of power supply voltage and hearing equipment, applied in transducer circuits, hearing aids, electrical components, etc., can solve the problems of total current consumption and large bias current consumption of microphone amplifier circuits

Active Publication Date: 2015-07-01
GN HEARING AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, for the reasons discussed above, a relatively large bias current is still required in the input stage of the microphone amplifier circuit
This means that the input stage can consume as much as 25% of the total current consumption of the microphone amplification circuit (even including the analog-to-digital conversion of the amplified microphone signal)

Method used

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  • Hearing instrument with switchable power supply voltage
  • Hearing instrument with switchable power supply voltage
  • Hearing instrument with switchable power supply voltage

Examples

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Embodiment Construction

[0046] Hereinafter, various embodiments are described with reference to the accompanying drawings. It should also be noted that the drawings are only intended to facilitate the description of the embodiments. They are not intended to be an exclusive description of the invention or to limit the scope of the invention. In addition, an illustrated embodiment need not have all aspects or advantages presented. An aspect or advantage described in connection with a particular embodiment is not necessarily limited to that embodiment and can be practiced in any other embodiment, even if not so illustrated, or if not explicitly described as such.

[0047] figure 1 is a simplified schematic block diagram of a microphone assembly 100 including a switchable power supply for a hearing device. Hearing devices may include any type of hearing aid housing style such as over-the-ear (BTE), in-the-canal (ITC), deep-in-the-canal (CIC), and the like. Hearing devices may include certain conventi...

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PUM

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Abstract

The invention relates to a hearing instrument with switchable power supply voltage. The hearing instrument includes: a microphone comprising a microphone transducer element, wherein the microphone transducer element is configured to provide a transducer signal in response to receipt of sound; a microphone amplification circuit configured to generate an amplified microphone signal based on the transducer signal; a control and processing circuit for receipt and processing of the amplified microphone signal according to a hearing loss of a user; and a level detector configured to detect a level of the amplified microphone signal; wherein the microphone amplification circuit is coupled to a switchable power supply, and wherein the switchable power supply is configured to selectively connect a first power supply voltage, having a first DC voltage level, or a second power supply voltage, having a second DC voltage level higher than the first DC voltage level, to the microphone amplification circuit based on the detected level of the amplified microphone signal.

Description

technical field [0001] The present disclosure relates to hearing devices. Background technique [0002] A hearing device or hearing aid typically includes a microphone amplification assembly comprising one or more microphones for receiving incoming sound such as speech and music. Incoming sound is converted into one or more electrical microphone signals, which are amplified and processed in the hearing device's control and processing circuitry according to one or more preset listening programs. Typically, these listening programs are calculated with a user-specific hearing impairment or hearing loss expressed, for example, in an audiogram. The output amplifier of the hearing device delivers the processed microphone signal to the ear canal of the user via a small speaker or receiver which may be housed together with the microphone in the housing of the hearing device or separately in the earplug. [0003] In general, the noise level of the input stage of the microphone ampl...

Claims

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Application Information

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IPC IPC(8): H04R25/00H04R3/00
Inventor 马丁·温特尔
Owner GN HEARING AS
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