Headset capable of improving low-frequency sound insulation performance

Abstract

The invention discloses a headset capable of improving the low-frequency sound insulation performance. The headset comprises an earmuff shell forming an earmuff cavity, a loudspeaker located in the earmuff cavity and a guide tube with two ends open; and one end of the guide tube stretches into the loudspeaker and is located under a diaphragm of the loudspeaker, and the other end of the guide tubepenetrates through the earmuff shell to be communicated with the outside. According to the headset, by adopting the mode of installing the guide tube on the earmuff shell and stretching the guide tubeinto the position under the diaphragm of the loudspeaker, the corner frequency of a low pass filter formed by an earmuff is reduced, and then the condition that outside noise in more frequency bandspenetrates through the earmuff shell to enter the earmuff cavity can be prevented to improve the low-frequency noise insulation performance of the headset product; and meanwhile, by stretching the guide tube out to the outer side of the earmuff shell, sound holes do not need to be formed in the earmuff shell, not only can the audio output requirement of the loudspeaker be met, but also the condition that the outside noise passes through the sound holes to enter a back cavity of the loudspeaker can be prevented, therefore, the sound insulation and noise reduction capacity of the headset is further improved, and the audio rendering quality of the headset is improved.

Description

technical field [0001] The invention belongs to the technical field of earphone devices, and relates to a headset, in particular to a noise-reduction structure design applied to headset products for isolating external noise. Background technique [0002] Existing earphone products, especially earphones, often adopt a thick earmuff shell to form a large-sized earmuff cavity. The earmuff shell and the earmuff cavity can form a low-pass filter to largely isolate high-frequency noise from the outside world, so that the noise that passes through the earmuff shell and enters the earmuff cavity mainly comes from the external noise lower than The low-frequency part of the corner frequency of the low-pass filter, so as to achieve a good high-frequency noise isolation effect. [0003] However, passive noise isolation is difficult to isolate low-frequency noise with large wavelength and strong penetrating ability. To achieve better low-frequency noise isolation performance, a thicker ...

AI Technical Summary

Problems solved by technology

The traditional noise reduction design of earphone products not only makes the earmuffs bulky and unattractive, but also bulky and uncomfortable to wear, which seriously affects the wearer's experience and is difficult to promote and apply on a large scale.

Images