Audio signal processing method and device and storage medium

An audio signal and processing method technology, applied in the field of signal processing, can solve the problems of separation and the difficulty of satisfying the noise reduction effect, and achieve the effect of improving the noise reduction effect and reducing the deviation.

Pending Publication Date: 2020-11-20
BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of noise reduction processing, it is often difficult to separate the noise component in t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Audio signal processing method and device and storage medium
  • Audio signal processing method and device and storage medium
  • Audio signal processing method and device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0074] figure 1 It is a flowchart of a method for processing an audio signal according to an exemplary embodiment, such as figure 1 As shown, the method includes the following steps:

[0075] Step S101, acquiring the noise frequency power spectrum and noise power spectrum to be processed;

[0076] Step S102, according to the power characteristics of the frequency power spectrum with noise at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an audio signal processing method and device and a storage medium. The method comprises the following steps of: acquiring a to-be-processed band noise frequency power spectrumand a to-be-processed noise power spectrum; determining a first noise component according to the power characteristics of the band noise frequency power spectrum at each frequency point, the first noise component being a steady-state noise component contained in both the band noise frequency power spectrum and the noise power spectrum; subtracting the first noise component from the band noise frequency power spectrum to obtain a band noise frequency component; subtracting the first noise component from the noise power spectrum to obtain a second noise component; determining a frequency domainestimation signal according to the band noise frequency component and the second noise component; and performing time-frequency conversion based on the frequency domain estimation signal to obtain anoise-reduced audio signal. Through the technical scheme of the embodiment of the invention, the common steady-state noise component is removed from the band noise frequency power spectrum and the noise power spectrum, and then the noise reduction processing is performed on the audio signal, so that the processing deviation caused by the steady-state noise can be reduced, and the noise reduction effect is improved.

Description

technical field [0001] The present disclosure relates to signal processing technologies, and in particular, to an audio signal processing method and device, and a storage medium. Background technique [0002] With the continuous development of communication technology and Internet technology, the processing of multimedia information has become an important research direction of information communication. In order to achieve clearer and high-quality communication or data transmission, it is necessary to perform noise reduction processing on audio signals. Noise reduction processing can usually use filtering to remove noise components in the signal, thereby improving signal quality. However, in the process of noise reduction processing, it is often difficult to separate the noise component in the signal from the pure audio signal, so the noise reduction effect is difficult to meet the increasing user requirements. Contents of the invention [0003] The disclosure provides ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232G10L25/18G10L25/21
CPCG10L21/0208G10L21/0216G10L21/0232G10L25/18G10L25/21
Inventor 何梦楠王林章
Owner BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap