Gas-liquid compound sealing sound insulation device

Abstract

The invention discloses a gas-liquid compound sealing sound insulation device. The device comprises an air bag and a liquid bag which is sleeved with the air bag, and the air bag and the liquid bag are each an annular sealing member. Therefore, the air bag serves as a sound insulation outer layer, the liquid bag serves as a sound insulation inner layer, noise passes through the air bag on the outer layer and then enters the liquid bag, and then acoustic energy is reflected, absorbed and scattered, so that the good sound insulation effect can be achieved. According to the gas-liquid compound sealing sound insulation device, on one hand, the phenomenon that interference of the noise affects the accuracy of the test result is avoided; on the other hand, comfort of a testee in the testing process is improved. By means of convenience and effectiveness, the device can be well popularized into various organizations applying hearing tests.

Description

technical field [0001] The invention relates to a sound insulation device, in particular to a gas-liquid composite sealing sound insulation device. Background technique [0002] Hearing test is the most routine and important examination item in the otology clinic. The results can reflect the degree and nature of hearing loss and the location of the lesion, and are widely used in clinical diagnosis and treatment of otolaryngology and experience. In order to meet the current huge clinical needs, various hospital clinics, fitting centers, and rehabilitation institutions have set up hearing examination programs. The most widely used is pure tone testing. Pure tone testing requires a pure tone audiometer, testing earphones and a sound-proof environment. Among them, the most common test earphones are earphones and circumaural earphones. These earphones do not have the effect of sound insulation. Although the entire test process is generally carried out in a soundproof room, any no...

AI Technical Summary

Problems solved by technology

Among them, the most common test earphones are earphones and circumaural earphones. These earphones do not have the effect of sound insulation. Although the entire test process is generally carried out in a soundproof room, any noise in the soundproof room will be For example, the rustling sound of clothes rubbing will become quite obvious, which may prevent the subjects from relaxing well during the test, and it is necessary to avoid problems such as posture conversion, breathing and saliva swallowing

Therefore, although the soundproof room can better block the external sound source, it has no effect on the internal sound.

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