Active noise reduction earphone in hybrid structure, noise reduction method, and storage medium

Abstract

The invention discloses an active noise reduction earphone in a hybrid structure, a noise reduction method, and a storage medium. The active noise reduction earphone in the hybrid structure comprisesan active noise control system, a reference microphone and a noise elimination microphone, the reference microphone and the noise elimination microphone are both connected with the active noise control system, the reference microphone is used for acquiring external noise of the earphone and transmitting the acquired external noise to the active noise control system, the active noise control systemis used for processing the external noise acquired by the reference microphone and outputting canceling noise to the noise elimination microphone, and the noise elimination microphone is used for externally outputting the received canceling noise and canceling practical noise. According to the active noise reduction earphone in the hybrid structure, a robust design is adopted, noise signals are processed in the manner of circulation and iteration through the system, the most appropriate noise reduction system coefficient can be selected, the change of the noise signals can be tracked more rapidly and accurately, and the noise elimination effect is greatly improved.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a hybrid structure active noise reduction earphone, a noise reduction method and a storage medium. Background technique [0002] Acoustic noise exists in daily life, work and other environments, and noise pollution has become an environmental problem of great concern all over the world. In the process of industrial production, equipment such as engines, blowers, fans, transformers, vacuum pumps, and air compressors produce high-decibel noises; in family life, traffic on the road, air conditioners and other household appliances also produce various audio noises; these noises Seriously endanger the physical and mental health of personnel who have been in close contact with equipment for a long time, causing hearing loss, fatigue, decreased concentration, and reduced production efficiency. Studies have shown that when the noise is 90 decibels, the sensitivity of the rod ce...

AI Technical Summary

Problems solved by technology

At present, the main application of active noise reduction technology is earphones, but the robustness of noise-cancelling earphones is poor at present. The structure of the noise reduction system is relatively simple, and it is easy to generate extra noise when dealing with some sudden noise scenes, which will greatly affect the noise reduction effect. impact, while affecting the comfort of the wearer

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