Frequency modulation radio for hearing aid

A technology for radios and hearing aids, used in hearing aids, pocket amplifiers, electronic input selection/mixing, etc., can solve the problems of expensive hearing aids, easy sound feedback, and difficulty in manufacturing, and achieve improved output, low battery consumption, and large output. Effect

Inactive Publication Date: 2006-08-16
具然永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if you want to integrate more components within a limited size, it is difficult to manufacture a product with high sound and high quality that integrates many components because the microphone that picks up the sound is close

Method used

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  • Frequency modulation radio for hearing aid
  • Frequency modulation radio for hearing aid
  • Frequency modulation radio for hearing aid

Examples

Experimental program
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Embodiment Construction

[0021] Such as image 3 As shown, the purpose of the present invention is to produce an FM radio that adds the function of a high-quality hearing aid to a portable FM radio, replacing part of the functions of a high-priced hearing aid, so that ordinary people can use it easily. In order to use the small speaker built in the portable FM radio as the dynamic microphone 1 and improve the picked-up sound, the present invention provides a two-stage pre-microphone amplifier 25 . Switch and select the radio signal and the hearing aid signal by the function switching switch 20, connect to the input end of the volume regulator 21 of the original radio, and then hear the sound with the earphone 27 through the voice amplifier 26 of the radio. In addition, the earphone 27 selects products with excellent frequency characteristics, sound pressure sensitivity, and timbre, and selects products with radio and impedance matching, so as to obtain sound quality and timbre very close to the origin...

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Abstract

The invention adds a hearing aid function to the small portable frequency modulation (FM) radio. The FM radio is a super-heterodyne receiver composed by a FM broadcasting waves (RF), amplifiers, a local oscillator (OSC), a mixer, an IF amplifier, a detector, a voice amplifier (AF), headphones and speakers. To add a hearing aid function to the small portable frequency modulation radio, a FM radio as shown in the abstract figure is manufacturered. A built-in speaker is used as a dynamic microphone (1) for picking up voice signals. In addition, a pre-microphone amplifier (25) is increased, to enlarge the voices picked-up by the microphone. Herein, the high-frequency gain of the audio is inhibited, to reduce the listening barriers caused by the external noise of the frequency. The radio and hearing aids functions are selected by a function switching (20), the selected signal is output to the headphone (27) through the voice amplifier (26) of the original radio, accordingly hearing the voices.

Description

technical field [0001] The present invention relates to an FM radio for hearing aids in which a hearing aid function is added to a portable small FM radio. Background technique [0002] Hearing aids have been developed as people suffer hearing loss and aging due to various factors. At first, it was a mechanical structure, starting from the way of gathering sound by touching a horn-shaped object to the ear. With the development of electronic technology, in the era of vacuum tubes, large hearing aids that are inconvenient to carry have been manufactured using microphones and vacuum tubes that use carbon powder. In the form of pockets or hanging around the neck, in recent years, with the development of composite ICs, its volume has been further reduced, and behind-the-ear hearing aids that are hung on the pinna and analog hearing aids that are placed in the ear are commonly used. Recently, digital hearing aids have also been manufactured, and their performance has been greatl...

Claims

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Application Information

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IPC IPC(8): H04B1/06
CPCH04B1/06H04R25/04H04R25/356H04R25/43H04R25/453H04R2430/01H04R2499/11H04R25/603
Inventor 具然永
Owner 具然永
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