Active noise reduction method and device of earphone and half-in-ear active noise reduction earphone

A technology for active noise reduction and earphones, which is used in earphones to reduce ambient noise, active noise control, earpiece/earphone accessories, etc. It can solve problems such as acoustic leakage, inability to implement passive noise reduction, and poor active noise reduction for semi-in-ear headphones. , to achieve the effect of improving the noise reduction effect, excellent wearing experience and noise reduction performance

Pending Publication Date: 2021-07-13
北京安声科技有限公司
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Problems solved by technology

[0003] However, the poor sealing between the semi-in-ear headphones and the human ear canal leads to acoustic leakage, and it is almost impossible to implement passive noise reduction; if the same active noise reduction scheme as the general in-ear headphones is adopted, the active noise reduction effect of the semi-in-ear headphones will poor

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  • Active noise reduction method and device of earphone and half-in-ear active noise reduction earphone
  • Active noise reduction method and device of earphone and half-in-ear active noise reduction earphone
  • Active noise reduction method and device of earphone and half-in-ear active noise reduction earphone

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] For ease of understanding, the following briefly introduces related concepts that may be involved in the embodiments of the present application.

[0028] An open space sound field is formed between the pinna of the user and the active noise canceling earphones. Acoustic signal vector collected by microphone array Each frequency component can be obtained by fast Fourier transform (FFT) Where m=1, 2, 3, . . . , M, M is the number of FFT ...

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Abstract

The invention provides an active noise reduction method and device of an earphone and a half-in-ear active noise reduction earphone. The active noise reduction method of the earphone comprises the steps that a first sound signal vector collected by a microphone array arranged on the earphone is acquired; the microphone array comprises at least one reference microphone used for collecting environment noise signals and at least one error microphone used for collecting in-ear noise signals. The method includes steps of: determining a current noise reduction parameter according to the first sound signal vector; and determining a noise reduction signal according to the current noise reduction parameter and the environmental noise signal. According to the technical scheme provided by the embodiment of the invention, the noise reduction effect of the earphone can be improved, and the earphone has excellent wearing experience and noise reduction performance.

Description

technical field [0001] The invention relates to the technical field of active noise reduction, in particular to an earphone active noise reduction method and device, and a semi-in-ear active noise reduction earphone. Background technique [0002] In recent years, the market for headphones with active noise cancellation has continued to grow, such as circumaural headphones, in-ear headphones. Among the in-ear earphones, the semi-in-ear earphones, which are more special, are quite popular among certain users because of their advantages such as comfortable wearing, cleanliness, no foreign body sensation, and no stethoscope effect. [0003] However, the poor sealing between the semi-in-ear headphones and the human ear canal leads to acoustic leakage, and it is almost impossible to implement passive noise reduction; if the same active noise reduction scheme as the general in-ear headphones is adopted, the active noise reduction effect of the semi-in-ear headphones will poor. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10G10K11/178
CPCG10K2210/1081G10K11/17813G10K11/17825H04R1/1083
Inventor 徐银海刘益帆
Owner 北京安声科技有限公司
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