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Noise suppression method and mobile terminal

A noise suppression, mobile terminal technology, applied in speech analysis, speech recognition, instruments, etc., can solve the problem of high noise delay and achieve the effect of reducing delay

Active Publication Date: 2017-12-22
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a noise suppression method and a mobile terminal to solve the problem that the noise suppression scheme in the prior art has a high delay in finding noise and cannot perform noise suppression in a timely manner.

Method used

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  • Noise suppression method and mobile terminal

Examples

Experimental program
Comparison scheme
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no. 1 example

[0030] refer to figure 1 , which shows a flowchart of a noise suppression method according to an embodiment of the present invention, which is applied to a mobile terminal, and the method may specifically include the following steps:

[0031] Step 101, identifying the audio signal output by the application program to determine the audio type;

[0032] Wherein, the application program may be various software capable of outputting audio, such as music player software, video player software, and the like. In order to suppress noise in the audio output by the application program, it is first necessary to determine the type of audio output by the application program, such as voice, music, and the like.

[0033] Step 102, determining a noise tracking method corresponding to the audio type;

[0034] Step 103, using the noise tracking method to perform noise tracking on the audio signal to obtain noise energy of the audio signal;

[0035] Wherein, a noise tracking method correspond...

no. 2 example

[0040] refer to figure 2 , which shows a flowchart of a noise suppression method according to an embodiment of the present invention, which is applied to a mobile terminal, and the method may specifically include the following steps:

[0041] Before explaining the flow of the noise suppression method in this embodiment, here, for the convenience of readers to understand the technical solution of the embodiment of the present invention, firstly, a brief description of the preset neural network model in step 202 of the embodiment of the present invention is given.

[0042] In one embodiment, the preset neural network model can be a backpropagation (BP, back propagation) neural network model, or a convolutional neural network model (CNN), and of course is not limited to the two neural networks listed here model, and can also be other types of neural network models. Wherein, it should be noted that the preset neural network model here is a neural network model capable of recogni...

no. 3 example

[0088] refer to Figure 5 , shows a block diagram of a mobile terminal according to an embodiment of the present invention. The mobile terminal in the embodiment of the present invention can realize the details of the noise suppression method in the first embodiment to the second embodiment, and achieve the same effect. Figure 5 The mobile terminals shown include:

[0089] The identification module 51 is used to identify the audio signal output by the application program and determine the audio type;

[0090] A determining module 52, configured to determine a noise tracking method corresponding to the audio type;

[0091] A tracking module 53, configured to perform noise tracking on the audio signal by using the noise tracking method, and obtain noise energy of the audio signal;

[0092] A suppression module 54, configured to suppress the noise energy of the audio signal.

[0093] Optionally, refer to Image 6 ,exist Figure 5 On the basis of , the identification module...

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Abstract

The invention provides a noise suppression method and a mobile terminal. The method includes the following steps: identifying an audio signal output by an application, and determining the audio type; determining a noise tracking method corresponding to the audio type; using the noise tracking method to track the noise in the audio signal, and acquiring noise energy of the audio signal; and suppressing the noise energy of the audio signal. The noise in the audio signal is tracked through the noise tracking method corresponding to the audio type, so that the noise in the audio signal can be found in real time, the acquired noise energy can be suppressed in a timely and quick manner, the delay of noise finding is reduced, and users can hardly feel the presence of noise.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a noise suppression method and a mobile terminal. Background technique [0002] With the development of mobile terminal technology, the audio processing capabilities of mobile terminals are becoming more and more powerful, and there are more and more voice-type applications. Users can use voice-type applications to enhance calls, make music special effects, and sing (Karaoke) )Wait. With the development of various audio applications, users have higher and higher requirements for audio quality, and some application scenarios are also accompanied by various audio application problems, such as calls or karaoke, if there is a lot of noise and noise, it will seriously affect user experience. [0003] The traditional noise suppression scheme mainly determines whether there is noise in the audio signal by detecting the frequency spectrum change of the audio signal. The part ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02G10L25/03G10L25/30G10L15/02G10L15/16G10L15/20
CPCG10L15/02G10L15/16G10L15/20G10L21/02G10L25/03G10L25/30
Inventor 付姝华
Owner VIVO MOBILE COMM CO LTD
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