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Audio processing method and device based on transient noise suppression, equipment and medium

A transient noise and audio processing technology, applied in speech analysis, instruments, etc., can solve problems such as poor transient noise suppression and audio damage, and achieve good fidelity, suppress transient noise, and avoid damage

Pending Publication Date: 2020-11-24
PING AN TECH (SHENZHEN) CO LTD
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an audio processing method, device, equipment and medium based on transient noise suppression, so as to solve the technical problems of poor transient noise suppression effect and audio damage caused by transient noise suppression in the prior art

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  • Audio processing method and device based on transient noise suppression, equipment and medium
  • Audio processing method and device based on transient noise suppression, equipment and medium
  • Audio processing method and device based on transient noise suppression, equipment and medium

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Embodiment Construction

[0041] 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.

[0042] The terms "first", "second", and "third" in the present invention are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such ...

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Abstract

The invention relates to the technical field of artificial intelligence, in particular to an audio processing method and device based on transient noise suppression, equipment and a storage medium. According to the audio processing method, a characteristic value is calculated according to the maximum value of a current frame of audio signal and a frame energy value; a threshold value is calculatedaccording to a smooth value of the characteristic value and a threshold gain factor; whether the current frame of audio signal contains transient noise or not is judged based on the characteristic value and the threshold value; if the judgment result is yes, the peak value of the maximum value of a specified number of frames before the current frame is obtained; suppression gain is calculated according to the peak value, the maximum value of the current frame of audio signal and an expansion factor; through the mode, the characteristic value is well matched with the transient noise characteristic, the transient noise can be accurately tracked, and the transient noise inhibition effect is improved; and in addition, the peak value and the maximum value used for calculating suppression gainsare both time domain signal characteristics, an audio is prevented from being damaged, the transient noise is suppressed, and meanwhile, the audio signal has good fidelity.

Description

【Technical field】 [0001] The present invention relates to the technical field of audio processing, and also to the field of artificial intelligence, in particular to an audio processing method, device, equipment and medium based on transient noise suppression. 【Background technique】 [0002] Noise suppression is widely used in call scenarios such as telephone, voip, mobile audio and video calls, and office conference equipment. For noise suppression, it represents a typical application of audio pre-processing and also determines the success of a call product performance. Noise suppression needs to deal with various call scenarios and different noise sources. The noise suppression method in the prior art has a better effect on stationary noise. A typical example is the noise suppression algorithm in Google webrtc, but this The suppression effect of non-stationary noise is very poor, especially the transient noise, which almost has no suppression effect. Transient noise inclu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0224
CPCG10L21/0224
Inventor 付姝华汪斌
Owner PING AN TECH (SHENZHEN) CO LTD
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