Earphone

By employing a dual-speaker design in the headphones and adjusting the anti-phase ambient noise in real time, the problem of insufficient active noise cancellation performance in existing headphones has been solved, especially significantly improving the noise cancellation effect in low-frequency, high-noise scenarios.

CN122054032APending Publication Date: 2026-05-15HUAWEI DEVICE CO LTD
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Patent Information

Application Number
CN202411726624.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-27
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing headphones have poor active noise cancellation performance, and the effect of inverted audio signals in canceling out ambient noise is not good.

Method used

It adopts a dual-speaker design, with the first speaker responsible for the mid-to-high frequency range and the second speaker responsible for the low frequency range. It adjusts the inverse ambient noise in real time through front feedback and back feedback microphones, and uses the first and second speakers together to participate in active noise reduction, which improves the noise reduction effect, especially in low-frequency high-noise scenarios.

Benefits of technology

It improves the active noise cancellation performance of headphones in low-frequency, high-noise scenarios, enhances low-frequency output capability and noise cancellation effect, and improves the overall noise cancellation performance of headphones.

✦ Generated by Eureka AI based on patent content.
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Abstract

An earphone comprises a rear feedback microphone, an earmuff front shell and a sound outlet nozzle, an accommodating groove of the earmuff front shell is communicated with the sound outlet nozzle, the accommodating groove accommodates a first loudspeaker and a second loudspeaker, and the front feedback microphone, the first loudspeaker and the second loudspeaker are arranged in sequence. The rear feedback microphone is arranged at the sound outlet nozzle so as to be close to the tympanic membrane of the earphone wearer as much as possible, the sound collected by the rear feedback microphone is closer to the sound heard by the earphone wearer, and the earphone can adjust the anti-phase environmental noise in real time according to the sound collected by the rear feedback microphone; the first loudspeaker is arranged between the sound outlet nozzle and the second loudspeaker, compared with the second loudspeaker, the phase deviation of the anti-phase environment noise emitted by the first loudspeaker transmitted to the eardrum of an earphone wearer is smaller, and when the first loudspeaker and the second loudspeaker participate in active noise reduction at the same time, the phase deviation of the anti-phase environment noise transmitted to the eardrum of the earphone wearer is smaller. The anti-phase environment noise generated by the first loudspeaker can compensate for the phase deviation of the anti-phase environment noise generated by the second loudspeaker propagating to the tympanic membrane.
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