Double-microphone system for custom-made type hearing aid
A dual microphone and hearing aid technology, applied in the field of medical equipment, can solve the problem that the dual microphone system is not suitable for customized hearing aid products, and achieve the effect of reducing the ability of environmental input noise
Inactive Publication Date: 2012-12-26
LISOUND HEARING AID FUZHOU
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Problems solved by technology
There are existing international introductions of corresponding dual-microphone universal hearing aids, such as the name of the existing literature: A Primer on a Dual Microphone Directional System (primer on a dual-microphone directional system), and the source of the literature is: Reprinted with permission from The Hearing Review, January 2000, Vol. 7, No. 1, pages 56, 58 & 60 ; but in specific use, especially the custom-made products are custom-made and have no fixed shape, which is very different from the general-purpose hearing aid products in the use of components, so the use of the dual-microphone system on the general-purpose hearing aid Not suitable for custom hearing aid products
Method used
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[0019] see figure 1 , is a schematic block diagram of the overall structure of a dual-microphone system for a custom-made hearing aid, including two hearing aid microphones for collecting external sound signals; a hearing aid control chip that can provide dual-microphone system functions for calibration with the dual-microphone system The software is connected to calibrate the mismatch difference between the two microphones, that is, the acoustic signal input delay time of the two microphones, the sensitivity difference between the two microphones, and control the operation of the dual microphones; one hearing aid panel is used to fix the two microphones; hearing aid programming One device, used to input calibration instructions and save calibration parameters; one programming cable, used to connect hearing aids and hearing aid programmers; one computer supporting Windows XP OS, used for calibration software operation control; dual-microphone system calibration software, Insta...
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The invention provides a double-microphone system for a custom-made type hearing aid. The double-microphone system comprises two hearing aid microphones, a hearing aid control chip, a hearing aid panel, a hearing aid programmer, a computer provided with double-microphone system calibration software and a hearing aid analyzer. The two hearing aid microphones are used for collecting external voice signals, the hearing aid control chip is used for calibrating voice signal input delay time and sensitivity difference value of the two microphones and controlling the double microphones to work, the hearing aid panel is used for fixing the two microphones, the hearing aid programmer is used for inputting calibration orders and storing calibration parameters, the computer is used for calibrating software operation control and simultaneously used for calibration mismatching difference value of the two microphones, and the hearing aid analyzer is sued for analyzing voice signal input delay time and sensitivity difference value of the two microphones. The double-microphone system for the custom-made hearing aid can reduce environment input noise, has the directional voice signal collection function for the hearing aid microphones, and gives users high signal to noise ratio efficiency.
Description
technical field [0001] The invention relates to a medical device, in particular to a customized hearing aid with double microphones. Background technique [0002] By using a dual-microphone system on a hearing aid, it can reduce environmental input noise, provide a directional sound signal collection function, and give users a higher signal-to-noise ratio. There are existing international introductions of corresponding dual-microphone universal hearing aids, such as the name of the existing literature: A Primer on a Dual Microphone Directional System (primer on a dual-microphone directional system), and the source of the literature is: Reprinted with permission from The Hearing Review, January 2000, Vol. 7, No. 1, pages 56, 58 & 60 ; but in specific use, especially customized products, because their appearance is customized and unfixed, and the use of components is very different from general-purpose hearing aid products, so the use of the dual-microphone system on general-...
Claims
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Inventor 王楠
Owner LISOUND HEARING AID FUZHOU