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Maximum volume output hearing aid

A hearing aid, loud sound technology, applied in hearing aids, sensors, transducer circuits, etc., can solve the problems of low voice intelligibility, small sound output range, large noise, etc., to improve sound quality, increase capacitive coupling strength, and reduce noise. Effect

Inactive Publication Date: 2015-10-14
天津市助听器厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a maximum sound output hearing aid to solve the problems of high noise, small sound output range, and low voice clarity in the background technology.

Method used

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Embodiment

[0021] figure 1 Among them, this embodiment includes an input circuit, a first-stage amplifying circuit, a second-stage amplifying circuit, a third-stage amplifying circuit, a fourth-stage amplifying circuit, an output circuit, and a power supply module. The input circuit is for converting sound signals into electrical signals Circuit, the input circuit has three selection modes of external ambient sound, mute, and weak sound. The first-stage amplifying circuit is a circuit that amplifies the electrical signal at the first stage, and the second-stage amplifying circuit is the signal that is amplified at the first stage and then amplified at the second stage. The third-stage amplifying circuit is a circuit that amplifies the signal after the second-stage amplification, and the fourth-stage amplifying circuit is a circuit that amplifies the signal after the third-stage amplifying. The amplifying circuit adopts a push-pull output mode with a transformer, and the output circuit is...

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Abstract

The invention belongs to the field of electronic audio amplifying equipment and especially relates to a maximum volume output hearing aid. The maximum volume output hearing aid comprises an input circuit, a first stage of amplifying circuit, a second stage of amplifying circuit, a third stage of amplifying circuit, a fourth stage of amplifying circuit, an output circuit, and a power module. The fourth stage of amplifying circuit is a push-pull output structure equipped with a transformer and comprises a transformer Tr1, a diode D, two amplifiers T4 and T5, a capacitor C13, a resistor R12, and a potentiometer R13. The maximum volume output hearing aid reduces noise, enlarges a voice output range, and improves voice sharpness.

Description

technical field [0001] The invention belongs to the field of electronic sound reinforcement devices, in particular to a hearing aid with maximum sound output. Background technique [0002] A hearing aid is a medical device that compensates for the hearing loss of the human ear. Theoretically, the device can make up for as much hearing loss as the deaf person has, and eliminate hearing impairment for the deaf person. At present, the sound output range of hearing aids on the market is between 120-130dB and 130-140dB, which can meet the hearing needs of most deaf people, but it cannot meet the hearing needs of a few extremely severe or profoundly deaf people, and most hearing aids have noise Large, poor voice clarity, poor intelligibility, etc. For example: Chinese patent 200910013106.4 discloses a simple hearing aid circuit, including resistors, capacitors, triodes, power supplies and sound-sensitive components. The positive pole of the third capacitor, the first resistor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R25/00H04R3/00
Inventor 唐惠德
Owner 天津市助听器厂
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