Denoising method and device

A technology of noise cancellation and signal-to-noise ratio, which is applied in the field of noise cancellation methods and devices, can solve the problems affecting the noise cancellation effect, the distance between the main and auxiliary microphones is difficult to expand, and the difference of voice signals is not large enough to achieve a good noise cancellation effect

Inactive Publication Date: 2016-05-11
DONGGUAN COOLPAD SOFTWARE TECH
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Problems solved by technology

[0003] However, the above-mentioned denoising method is limited by the physical space of the terminal body, and it is difficult to extend the distance between the main microphone and the auxiliary microphone, so that the difference of the voice signal between the signal collected by the main microphone and the signal collected by the auxiliary microphone is not large enough, which ultimately affects the noise reduction. noise effect

Method used

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  • Denoising method and device
  • Denoising method and device

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Embodiment Construction

[0027] 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 making creative efforts belong to the protection scope of the present invention.

[0028] Embodiments of the present invention provide a method and device for eliminating noise, which can improve the sound quality of a terminal during a voice call. A detailed description will be given below in conjunction with the accompanying drawings.

[0029] See figure 2 , is a schematic flow chart of a noise reduction method provided by an embodiment of the present invention, and the method may include the following steps S201-S203.

[0030] Step S20...

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Abstract

The invention discloses a denoising method and device. The denoising method comprises the steps that the microphones of external sound pickup equipment and terminal equipment connected with the external sound pickup equipment are applied to acquire sound wave signals of the environment; the acquired sound wave signals are analyzed, and primary path signals and secondary path signals are determined; and the primary path signals and the secondary path signals act as input signals to perform denoising processing, and the denoising processing result acts as output signals to be outputted. With application of the denoising method and device, the finally determined primary path signals and the secondary path signals are enabled to be maintained to be close in noise signals and further different in voice signals so that a better denoising effect can be obtained.

Description

technical field [0001] The invention relates to the technical field of acoustic signal processing, in particular to a noise elimination method and device. Background technique [0002] In the context of the increasingly popular application of terminal communication technology, improving the quality of terminal voice calls has become a research hotspot. Noise cancellation technology based on dual microphones has been widely used in mobile terminals such as mobile phones. This technology is designed to place two microphones on the body of the terminal, one of which is set as the main microphone and the other is set as the auxiliary microphone. Such as figure 1 As shown, the main microphone is located at the lower end of the terminal, and the auxiliary microphone is located at the upper end of the terminal. When talking on the handheld terminal, the main microphone is closer to the user's mouth, and the auxiliary microphone is farther away from the user's mouth. Due to the p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/725H04M1/72454
Inventor 李建波
Owner DONGGUAN COOLPAD SOFTWARE TECH
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