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Earphone noise reduction method and device and earphone system

A headphone, noise reduction technology, applied in the field of acoustic signal processing, can solve problems such as useful signal interference

Pending Publication Date: 2021-09-17
深圳市佳廉电子技术开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the noise signals may not be able to cancel each other after inversion, they will still cause interference to the useful signal

Method used

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  • Earphone noise reduction method and device and earphone system
  • Earphone noise reduction method and device and earphone system
  • Earphone noise reduction method and device and earphone system

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0022] In this specification, qualifiers such as first and second may only be used to distinguish one element or act from another without necessarily requiring or implying any actual such relationship or order. Reference to an element or component or step (etc.) should not be construed as being limited to only one of the element, component, or step, but may be one or more of the element, component, or step, etc., where the circumstances permit.

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Abstract

The invention discloses an earphone noise reduction method, an earphone noise reduction device and an earphone system, aiming at improving the noise reduction performance of an earphone and eliminating interference on useful signals. The earphone system comprises an earphone body, an earphone noise reduction device and a microphone arranged in the earphone body, the earphone body comprises a loudspeaker, and the earphone noise reduction device comprises a useful signal processing unit and a noise signal processing unit; the useful signal processing unit is used for processing the useful signal and inputting the useful signal to a positive phase end of the loudspeaker; the microphone is used for picking up noise signals and inputting the noise signals into the noise signal processing unit; and the noise signal processing unit is used for processing noise signals picked up by the microphone and then inputting the noise signals to the negative phase end of the loudspeaker. According to the technical scheme provided by the invention, on one hand, the useful signal and the noise signal are transmitted to the earphone according to respective independent signal paths and do not interfere with each other; and on the other hand, the noise signal in the ear and the noise signal output by the negative phase end are eliminated after being superposed in the ear, so that useful signals are not interfered, and a user is not interfered.

Description

technical field [0001] The invention relates to the field of acoustic signal processing, in particular to an earphone noise reduction method, device and earphone system. Background technique [0002] Earphones are the sound signal output components of many electronic devices, and their function is to receive the sound signals output by the electronic devices and transmit them to the user's ears without causing the sound signals output by the electronic devices to be released. One of the parameters to measure the quality of headphones is the noise reduction performance, so the selection of noise reduction methods is particularly important. Existing earphone noise reduction methods include active noise reduction schemes, specifically mixing at least two noise signals out of phase with useful signals, and then amplifying the mixed signals from the positive phase of the driver unit of the earphone, that is, the speaker. terminal input. However, since the noise signals may not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R3/00
CPCH04R1/1083H04R3/00
Inventor 龚伟
Owner 深圳市佳廉电子技术开发有限公司
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