ANC system sound production module with cavity characteristics

Abstract

The embodiment of the invention discloses an ANC system sound production module loudspeaker fixing device with cavity characteristics. The ANC system sound production module loudspeaker fixing devicecomprises a loudspeaker fixing device body, fixing plates are fixedly connected to the left side and the right side of the loudspeaker fixing device body respectively, sliding grooves with the lengthequal to that of the fixing plates are formed in the middles of the fixing plates on the two sides respectively, mounting grooves are connected to the upper ends and the lower ends of the sliding grooves in a clamped mode respectively, and a loudspeaker is mounted in an inner cavity of the loudspeaker fixing device body. According to the acoustic equipment structure applied to active noise reduction, a loudspeaker and a loudspeaker fixing device body are assembled and connected to form a sound production module; an enclosed box body can effectively isolate the communication of front and back air at the loudspeaker diaphragm, sound short circuit is prevented from being formed, low-frequency distortion of the loudspeaker is greatly reduced, the low-frequency processing capacity of the activenoise reduction device is improved, processable minimum-frequency sound waves are reduced, the range of a mute interval is enlarged, the purpose of noise reduction is achieved, and the practicabilityand feasibility of the device are reflected.

Description

technical field [0001] The present application relates to the field of noise reduction equipment, and more specifically, to a loudspeaker fixing device for an ANC system sound module with a cavity feature. Background technique [0002] With the rapid development of my country's economy, high-speed rail travel has developed into the main mode of transportation for national travel, and passenger comfort has become an important concern. Among them, the noise level in the train compartment during running is an important index to measure the comfort of passengers. Therefore, the control of noise has become a hot spot in the research of high-speed rail, automobiles, airplanes, and ships. The research on active noise reduction technology in my country started in the 1990s, and it is mainly concentrated in scientific research institutions such as domestic university research institutes and the military industry. At present, there are no active noise reduction products with mature ...

AI Technical Summary

Problems solved by technology

[0003] Although the existing active noise reduction equipment can meet the basic needs of use, the disadvantages are still very obvious. The main manifestations are: the current active noise reduction products cannot effectively suppress the low frequency, because the low frequency sound wave has a large wavelength, making the speaker " Acoustic short circuit", unable to emit low-frequency sound waves, affecting the range and minimum frequency of the silent interval

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