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Method and device for removing headset scream

A headphone and signal technology, applied in earpiece/headphone accessories, frequency response correction, etc., can solve problems such as injury and increased risk of howling

Active Publication Date: 2013-10-02
QINGDAO GOERTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sometimes due to product size restrictions or performance index requirements, we need to set the side tone or the gain of the noise reduction circuit to be relatively large, which increases the risk of howling, and a guarantee mechanism is needed to avoid the damage caused by howling to the wearer. harm

Method used

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  • Method and device for removing headset scream
  • Method and device for removing headset scream
  • Method and device for removing headset scream

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] Figure 4 It is a flow chart of a method for eliminating earphone howling provided by an embodiment of the present invention.

[0057] see Figure 4 , an embodiment of the present invention provides a method for eliminating earphone howling, which is suitable for an earphone having a microphone and a speaker, and the signal collected by the microphone is transmitted to the speaker, and the method includes:

[0058] Step 401, receiving the signal collected by the microphone and the signal to be played by the speaker;

[0059] Step 402, performing envelope energy detection on the signal collected by the microphone and the signal to be played by the speaker;

[0060] Step 403, when the envelope energy of the signal collected by ...

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Abstract

The invention discloses a method and a device for removing a headset scream, which are suitable for a headset provided with a microphone and a loudspeaker and capable of transmitting a signal acquired by the microphone to the loudspeaker. The method comprises the steps as follows: receiving the signal acquired by the microphone and a signal required to be played by the loudspeaker; carrying out envelope energy detection on the signal acquired by the microphone and the signal required to be played by the loudspeaker; when the envelop energy value of the signal acquired by the microphone or the signal required to be played by the loudspeaker is more than a preset threshold value, obtaining a similarity value of the signal acquired by the microphone and the signal required to be played by the loudspeaker; and when the similarity value reaches a preset value, carrying out scream removal treatment. According to the technical scheme, the headset scream can be effectively removed and the injury to hearing of a headset wearer is avoided.

Description

technical field [0001] The invention relates to the technical field of earphone design, in particular to a method for eliminating earphone howling and a device for eliminating earphone howling. Background technique [0002] Most of the early communication earphones were equipped with a microphone pull rod. When using the microphone, it was very close to the mouth, which could ensure the signal-to-noise ratio of the communication. The microphone was far away from the earphone speaker, and the side tone signal from the speaker was not easy to be collected by the microphone. Positive feedback howling occurs. However, with the light weight and portability of communication equipment and the widespread application of digital signal processing technology, the microphone lever is gradually replaced by one or more microphone arrays on the ear shell and its algorithm processing, and the earphone gradually adopts a foldable solution. When the earphone is folded The distance between th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R3/04
Inventor 周宏伟华洋吴凡
Owner QINGDAO GOERTEK
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