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A method for avoiding the hearing injury of audio equipment and electro-acoustic device made through this method

A kind of audio equipment and audio technology, applied in the direction of amplification control, electrical components, gain control, etc., can solve the problems of cutting off the maximum peak value, sound distortion, etc., achieve low cost, high sound quality and automation, and easy to use Effect

Inactive Publication Date: 2007-10-24
比特联创电子(北京)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amplitude exceeds the threshold voltage of the limiter, the amplitude is immediately reduced to the threshold value. Although this can avoid hearing damage caused by large signals, the sound will be distorted because the maximum peak value is cut off.

Method used

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  • A method for avoiding the hearing injury of audio equipment and electro-acoustic device made through this method
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  • A method for avoiding the hearing injury of audio equipment and electro-acoustic device made through this method

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Embodiment Construction

[0037] The core of the present invention is: from the existing several protection methods analyzed by the background technology and in conjunction with Fig. 3 and Fig. 4, it can be seen that the simple limitation of the electrical signal voltage of the audio equipment used in the existing several hearing protection methods is Insufficient and unscientific, if the purpose of hearing protection is to be achieved, the sound signal from the earphone must be controlled according to the sound pressure that the human ear can withstand, that is, all links before entering the ear, including audio Equipment and headphones, this is the safest and most effective. The present invention is a method for real-time monitoring of the instantaneous sound pressure and accumulated sound pressure of the sound signal coming out of the earphone to protect hearing. The principle of the method is to monitor the The sound pressure of the sound signal from the earphone monitors the instantaneous sound pr...

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Abstract

The provided protection method for people ears comprises: monitoring the transient pressure of sound signal from earphone and the sum pressure in a period, comparing the sum with a safe threshold stored in a master controller, and feeding result back to the master controller. This invention is simple and low cost, and can provide well protection effect on ears.

Description

technical field [0001] The present invention relates to the field of digital audio technology, in particular to a method for real-time monitoring of the instantaneous sound pressure of the sound signal coming out of the earphone and the accumulated sound pressure within a period of time so as to prevent the audio equipment from damaging the hearing and the electroacoustic device made by the method . Background technique [0002] With the popularization of more and more audio equipment, listening to stereos, Walkmans, and MP3s has become a way of leisure and entertainment for many people. However, the resulting problems also followed one after another. Because some people listened for too long and listened to the volume too loudly, the corresponding hearing was also affected. There are also cases in foreign countries where consumers sue audio equipment manufacturers for hearing damage caused by listening to audio equipment. Therefore, due to the problem of hearing damage ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00H03G3/20
Inventor 屈家伟
Owner 比特联创电子(北京)有限公司
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