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Voice signal processing system and method with active noise reduction

A technology of voice signal processing and active noise reduction, applied in transducer circuits, sensors, electrical components, etc., can solve the problems of increasing the cost of noise-cancelling headphones, large size, and complex structure of headphones, simplifying the design of headphones and reducing system costs. cost, effect of eliminating ambient noise

Inactive Publication Date: 2016-02-03
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

Passive noise-cancelling headphones mainly block noise through sound-insulating materials, which can isolate noise to a certain extent, but the effect is not good
Active noise-canceling headphones place a microphone near the left speaker and the right speaker respectively, and set a lithium battery and a dedicated voice processing chip in the headphone device to achieve noise reduction. However, too many functional units are directly set in the headphone device. It makes the structure of the earphone complex, the volume is larger, and the cost of the noise-canceling earphone is increased

Method used

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  • Voice signal processing system and method with active noise reduction
  • Voice signal processing system and method with active noise reduction
  • Voice signal processing system and method with active noise reduction

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Embodiment Construction

[0030] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0033] refer to figure 1 , figure 2 , image 3 , Figure 4 , an active noise reduction speech signal proce...

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Abstract

The invention relates to the technical field of electronic communications, in particular to a voice signal processing system. The voice signal processing system with active noise reduction comprises a microphone, an inverse operation unit, a mixing unit and a loudspeaker, wherein the microphone is used for acquiring an environmental noise and converting the acquired environmental noise into an electric signal; the inverse operation unit is connected with an output end of the microphone, and used for performing an inverse operation on the electric signal in order to form an inverse noise signal; the mixing unit is connected with an output end of the inverse operation unit, and used for mixing the inverse noise signal with an audio signal to be played of a playing unit in order to obtain a mixed signal; the loudspeaker is connected with an output end of the mixing unit, and used for playing the mixed signal; and the inverse noise signal in the mixed signal is counteracted with the environmental noise in order to realize noise reduction. Through adoption of the voice signal processing system, the environmental noise can be eliminated actively, and a headset design is simplified, so that the system cost is lowered to the maximum extent while noise reduction is realized.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a voice signal processing system. Background technique [0002] When users use ordinary headphones to listen to music in a noisy environment, they usually increase the volume to cover the noise. However, listening to music at high volume for a long time will cause auditory fatigue and hearing damage. Noise-cancelling earphones in the prior art are mainly divided into passive noise-cancelling earphones and active noise-cancelling earphones. Passive noise-cancelling headphones mainly block noise through sound-insulating materials, which can isolate noise to a certain extent, but the effect is not good. Active noise-canceling headphones place a microphone near the left speaker and the right speaker respectively, and set a lithium battery and a dedicated voice processing chip in the headphone device to achieve noise reduction. However, too many functional units are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 陈俊杰
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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