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Headphones with Active Noise Cancellation Function and Automatic Correction Method

An active noise and noise technology, applied in the direction of frequency response correction, earpiece/headphone accessories, etc., can solve the problem of long correction time and achieve the effect of improving the matching degree

Active Publication Date: 2018-04-13
C-MEDIA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still needs to be manually adjusted to realize the calibration procedure, that is, the gain value of the microphone is adjusted before burning, and it needs to be tested after burning to the OTP memory, so the calibration time is quite long

Method used

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  • Headphones with Active Noise Cancellation Function and Automatic Correction Method
  • Headphones with Active Noise Cancellation Function and Automatic Correction Method
  • Headphones with Active Noise Cancellation Function and Automatic Correction Method

Examples

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Embodiment Construction

[0045] Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings in which

[0046] Some illustrative examples are shown in . However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like numbers indicate like components throughout.

[0047] It will be understood that although the terms first, second, third etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, a first component discussed below could be termed a sec...

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Abstract

Embodiments of the present invention provide an earphone with an active noise cancellation function and an automatic calibration method thereof. The earphone includes a first gain amplifier, an active noise cancellation module, a speaker, a measurement circuit, a correction control circuit, and a universal serial bus drive circuit. In the embodiment of the present invention, the automatic calibration of the earphone with the active noise cancellation function is performed through the USB interface, thereby greatly reducing the calibration time and improving the mass production efficiency.

Description

technical field [0001] The invention relates to an earphone with an active noise canceling function, in particular to an automatic calibration method for the earphone with an active noise canceling function. Background technique [0002] Today, with the increasing popularity of electrified products, audio equipment has become an important device for people to entertain and acquire new knowledge. Among them, earphones are a convenient device for listening anytime, anywhere. In order to provide a better listening effect, it is necessary to take noise prevention measures for the ambient noise that the earphone user will listen to at the same time. According to the different noise control methods used, earphones can be roughly divided into two types: passive noise control earphones and active noise suppression earphones. [0003] Passive noise prevention earphones simply rely on sound insulation materials to reduce environmental noise, so the ability to resist noise is greatly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10H04R3/04
Inventor 欧昆应
Owner C-MEDIA ELECTRONICS INC
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