A physical noise reduction device, method and application based on a vent valve
An air relief valve, physical technology, applied in earphones to reduce environmental noise, earphone manufacturing/assembly, earpiece/earphone accessories, etc., can solve problems such as helplessness, achieve simple structure and device, good noise reduction effect, and improve resistance to high noise and high pressure the effect of the ability
Active Publication Date: 2020-10-30
罗胤豪
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Problems solved by technology
[0004] However, the existing physical noise reduction earphones can only achieve a certain noise reduction effect in the noise environment below 105 decibels (civilian market). The current physical noise reduction methods are helpless in environments such as driving and flying personnel taking off and landing
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[0024] The present invention is further described below in conjunction with accompanying drawing and embodiment:
[0025] Such as figure 1 As shown, a physical noise reduction device based on an air release valve includes a device body, and the device body is set in the ear canal of the human ear, or wrapped around the outside of the human ear, so as to reduce the noise of the sound entering the human ear.
[0026] The device body is provided with an inner cavity 1 and an outer cavity. The inner cavity 1 communicates with the ear canal, and the outer cavity is a channel with a tightening port 6. One end communicates with the inner cavity 1, and the other end passes through the air intake on the device body. Hole 3 communicates with the outside. In this embodiment, the tightening port 6 is located in the middle of the outer cavity, and the specific location of the tightening port 6 can be adjusted according to different usage environments. The volume of the external cavity in...
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The invention discloses a physical noise reduction device and method based on a snuffle valve and application in the technical field of audio noise reduction. The air pressure flow entering the humanear is reduced; the device is internally provided with a channel communicated with the human ear, the channel is provided with a tightening opening, an air release valve with an air release hole is sleeved with the channel, the outer diameter of the air release valve is larger than the inner diameter of the tightening opening, and the air pressure difference between the two sides of the air release valve drives the air release valve to slide between the tightening opening and an air inlet hole of the device. The device is applied to the earphone. According to the invention, in a high-noise andhigh-air-pressure environment, noise is reduced; the snuffle valve is arranged at the front end of the noise, the noise is effectively attenuated firstly, then the sound is reversely counteracted bychanging the effective volume of the rear cavity, and then the earplugs (or earmuffs) are matched for physical noise reduction to form an integral noise reduction system, so that the high-noise and high-air-pressure resistance of the noise reduction device and the earphone is improved, and the hearing of human ears can be effectively protected.
Description
technical field [0001] The present invention relates to the technical field of audio noise reduction, and in particular, relates to a physical noise reduction device, method and application based on a vent valve. Background technique [0002] With the development of science and technology, people's living standards continue to improve, and more noise will be generated. In order to ensure a good living and working environment, it is necessary to reduce the noise entering the human ear. Therefore, noise-cancelling headphones have emerged as the times require. Noise canceling headphones are the most common. [0003] Physical noise-cancelling headphones are based on the principle of physical isolation. They use simple physical methods to create a closed space by designing the shape of the headphones or the in-ear type close to the ear canal, and to block the extra sound from the outside of the headphones to achieve noise reduction. Effect. For example, in the process of realiz...
Claims
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IPC IPC(8): H04R1/10
CPCH04R1/1058H04R1/1083
Inventor 罗育培罗胤豪
Owner 罗胤豪