Earpiece without impulse and high frequency noise

Abstract

A "cover-mounted receiver structure with no impact noise and no high-frequency noise", comprising a receiver body and a horn placed in the inner space of the receiver body, wherein one side of the receiver body is pierced At least one sound hole is provided, a ring of sounding board is set on the peripheral surface of the horn, and an appropriate position on one side of the sounding board is fixed on the inner wall of the receiver body, and the two sides of the loudspeaker are The relatively low intensity value of the sound pressure on the side of the voice power output end is output towards the sound outlet of the receiver body; when people wear it to listen to music (Music) or receive voice (Voice), in addition to effectively preventing high-intensity The sound pressure impacts the ear, and at the same time, the superposition and interference of two sound waves with different high and low intensity sound pressures can be used, so that people can obtain a high-quality clear sound field without noise.

Description

Technical field: [0001] The present invention is related to the cover-type earphone, especially refers to a structure that utilizes the speaker inside the receiver, so that when people use the cover-type earphone to listen to music or voice, the sound pressure of the sound can be avoided from directly impacting into the ear. And at the same time, a sound field without high-frequency noise can be obtained. Background technique: [0002] According to the 1990 National Institutes of Health Consensue Development Conference Statement (National Institutes of Health Consensue Development Conference Statement): "About 28 million people in the United States have hearing loss, and at least 10 million of them have hearing loss. The loss is due to exposure to noise."; and, in 1993, the National Ear Care Plan (National Ear Care Plan) pointed out: "About 17 out of 1,000 American adolescents under the age of 18 have hearing impairment. Obstacles."; In addition, in 1997, the US Southwester...

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Problems solved by technology

"; Therefore, whether the traditional receiver is an earplug receiver or a mask receiver, in addition to paying attention to volume control (when the sound pressure is 105dB, the use time of the day should not exceed one hour, and if the sound pressure is 95dB, it should not be used for a day. more than six hours), you should also pay attention to the impulsive noise (Impulse Noise) emitted by the receiver at the same time, because this very short-term impulsive noise contains extremely high sound pressure, which can easily cause eardrum rupture or middle ear hearing loss. The obstacle of this kind of hearing function of the middle ear is called conductive hearing loss (Conductive Hearing Loss). etc.), the percentage of people with hearing loss continues to increase every year, so the improper use of receivers is not only eroding the hearing health of American teenagers, but also endangering the health of teenagers all over the world;

[0003] Furthermore, the receiver receives the signal from the audio source (the receiver of the Walkman or communication equipment) and then converts it into sound waves and sends them directly to the ears, so that people can listen to the original sound in the frequency range of 20Hz-20KHz, but in fact , the original sound reproduction ability in the range of the aforementioned frequency range is not very ideal. The reason is that the signal received by the loudspeaker in the conventional receiver is not the signal transmitted by the megaphone, but from the walkman or communication The signal transmitted by the receiver used in this kind of signal has a lot of noise, so the frequency characteristics of the conventional receiver often appear in the high-frequency range part of the creaking high-frequency noise and harsh Phenomenon, and in the bass range, there will be a lot of humming low-frequency noise

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