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Earphone capable of reducing environmental noise

A technology for earphones and voice activity, which is applied in the direction of earpiece/earphone accessories, loudspeakers, microphones, etc., and can solve problems such as single microphone and inability to properly suppress environmental noise

Inactive Publication Date: 2021-02-26
姚敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional, non-directional noise suppression methods do not adequately suppress ambient noise, such as noise emitted by people near the headset wearer in the form of (interfering) speech
More specifically, the prior art fails to propose a hardware-based approach to ambient noise suppression that has the availability of a single microphone while simultaneously suppressing noise in the form of speech that occurs near the headset user

Method used

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  • Earphone capable of reducing environmental noise
  • Earphone capable of reducing environmental noise
  • Earphone capable of reducing environmental noise

Examples

Experimental program
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Embodiment Construction

[0011] figure 1 A block diagram showing a headset in perspective and a headset with a processor. As shown in perspective, the earphone 101 may have a housing 103 with earcups, supra-aural or supra-aural, and a microphone arm 104 extending from the housing 103 .

[0012] And there is a microphone tip or microphone compartment 102 carrying a microphone for picking up the speech of the earphone wearer. The microphone is designated as reference numeral 119 in the block diagram below. Inevitably, the microphone 119 can hear not only the speech of the wearer, but also the noise of the surrounding environment, such as the speech of people near the wearer of the earphone 101 . The microphone can be a single microphone, as it can only be one active microphone at a time. Therefore, electronic beamforming is not an option. However, microphones can be configured with a physical design that makes them directional.

[0013] A headband or head support is used to secure the headset to th...

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Abstract

An earphone has an electroacoustic input sensor for receiving a sound signal and converting the sound signal into an electrical signal. On the basis of processing a portion of the electrical signal, the speech activity detector is configured to detect near-end speech activity, far-end speech activity, and no speech activity, respectively; when the activities exist in the sound signals received bythe electro-acoustic sensor, respective modes are selected and then are selectively encoded in the control signal; the first processor is controlled by the sound activity detector to reduce intelligibility of the far-end sound activity in the output signal at least when the control signal indicates that there is a pattern of the far-end sound activity.

Description

technical field [0001] The present invention relates to a telephone noise cancellation system for reducing noise associated with mobile telephone conversations, thereby reducing disturbance to others and increasing privacy of mobile telephone users. Background technique [0002] Headsets may have different functions, one of them acts as a telephone receiver, and the user belonging to the near end of the call wears the earphones to capture her voice and transmit it to one or more persons on the far end of the call, and receive and Duplicates the voice of one or more remote persons as an audio signal. Headphones are used in a variety of situations, typically when the user of the headset is in a place where other people are talking nearby, such as talking loudly. This may be the case in offices or other locations such as call centers. In related experience, headset users have reported problems with people at the far end being able to hear and sometimes understand what people ...

Claims

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Application Information

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IPC IPC(8): H04R1/10
CPCH04R1/1091H04R2201/10
Inventor 姚敏
Owner 姚敏
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