Audio noise reduction method, device, equipment and medium

An audio noise reduction and noise frequency technology, which is applied in the field of audio processing, can solve problems such as voice damage and poor noise reduction effect, and achieve the effects of small delay, good noise reduction effect, and suppression of impact noise

Active Publication Date: 2022-04-08
SOUNDAI TECH CO LTD
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Problems solved by technology

[0004] In the above method, when the delay frame number setting is small, many human voices are estimated to be impact noise, resulting in speech damage, and there are still many attenuation segments after processing, so the noise reduction effect is poor

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  • Audio noise reduction method, device, equipment and medium
  • Audio noise reduction method, device, equipment and medium
  • Audio noise reduction method, device, equipment and medium

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Embodiment Construction

[0100] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0101] figure 1 is a schematic diagram of an audio noise reduction system provided by an embodiment of the present disclosure, see figure 1 , the audio noise reduction system may include the voice collection device 110 and the computer device 120, or the computer device 120 alone.

[0102] When the audio noise reduction system includes a voice collection device 110 and a computer device 120, the voice collection device 110 can be connected to the computer device 120 through a network or a data line. Wherein, the voice collection device 110 may have a voice collection function, and may collect audio to be reduced. In a possible implementation manner, the application scenario implemented by the present disclosure may be relatively ...

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Abstract

The disclosure provides an audio noise reduction method, device, equipment and medium, which belong to the technical field of audio processing. In the technical solution provided by the embodiments of the present disclosure, considering the characteristics of the low-frequency distribution of impact noise, the extracted first noise spectrum can accurately distinguish the human voice from the noise. In addition, the signal attenuation component is further estimated through the reverberation transfer function In this way, after noise reduction, multi-frame audio information is not required for noise estimation, so the delay is small, and the impact noise can be effectively suppressed at a small delay frame number, and the signal attenuation component is effectively removed from the target audio frame after noise reduction, reducing the Noise effect is better.

Description

technical field [0001] The present disclosure relates to the technical field of audio processing, and in particular to an audio noise reduction method, device, equipment and medium. Background technique [0002] In recent years, with the continuous development of audio processing technology, intelligent voice interaction systems such as smart speakers and vehicle-mounted voice interaction systems have become more and more popular. Identify and realize human-computer interaction. In actual use, the audio received by the intelligent voice interaction system is often mixed with different types of noise, so it is necessary to perform noise reduction processing on these audios first. [0003] In the related art, the audio noise reduction method is usually: taking advantage of the fast attenuation characteristic of impact noise, according to the audio information of the current frame and the next few frames, selecting the smallest smoothed power spectrum in these few frames as th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0232G10L25/03G10L25/51
CPCG10L21/0232G10L25/03G10L25/51
Inventor 郝斌冯大航陈孝良
Owner SOUNDAI TECH CO LTD
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