Device for monitoring the noise reduction effect of noise reduction headphones and active noise reduction headphones with adjustable noise reduction effect

Abstract

The invention relates to the technical field of headsets, in particular to a device for monitoring the noise-canceling effect of a noise-canceling headset and an active noise-canceling headset capable of adjusting the noise-canceling effect. The device for monitoring the noise-canceling effect of the noise-canceling headset is embedded in the active noise-canceling headset, and is used for directly monitoring and acquiring a noise signal before noise canceling and a noise signal after noise canceling, and visually judging the noise-canceling effect of the noise-canceling headset according to a comparison result of a noise signal A and a noise signal B which are matched in generation time. The device for monitoring the noise-canceling effect of the noise-canceling headset has a simple structure and high noise-canceling effect monitoring performance. A user selects an exterior environment while using the noise-canceling headset in different environments such as public traffic and fitness rooms, and the active noise-canceling headset can adjust reverse-phase noise signal strength output by an active noise-canceling circuit when the change of the demand of a user on the noise-canceling effect is recognized, so that a noise-canceling effect matched with a use environment is provided for the user.

Description

technical field [0001] The invention relates to the technical field of earphones, in particular to a device for monitoring the noise reduction effect of a noise reduction earphone and an active noise reduction earphone capable of adjusting the noise reduction effect. Background technique [0002] The noise reduction function of noise reduction headphones is divided into active noise reduction and passive noise reduction. The principle of active noise reduction is to collect the noise of the surrounding environment, and then generate an equal anti-phase noise signal to offset the noise, so as to achieve the noise reduction effect; passive noise reduction Noise reduction is to cover the ears with earmuffs to strengthen the sound seal between the earphones and the ear canal and prevent external noise from entering. Regardless of whether it is active noise reduction or passive noise reduction, the current evaluation of noise reduction effects is based on human experience. Even f...

AI Technical Summary

Problems solved by technology

Regardless of whether it is active noise reduction or passive noise reduction, the current evaluation of the noise reduction effect is based on human feelings. Even the test needs to prepare a special room separately to create a stable noise environment for testing, which is very inconvenient.

Moreover, the noise reduction effect has a great relationship with the environmental noise. Different frequencies of noise have different noise reduction effects. When users use noise reduction headphones in different environments such as public transportation and gyms, they have different requirements for noise reduction effects. , while the existing noise-cancelling earphones have a single noise-cancellation effect and cannot provide users with a noise-cancellation effect that matches the use environment

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