Audio signal detection method and device

An audio signal and detection method technology, applied in the audio field, can solve problems such as affecting bandwidth saving, inability to distinguish foreground music and background music, etc., to achieve the effect of improving classification performance, flexible processing scheme, and adjusting encoding quality

Inactive Publication Date: 2012-09-26
HUAWEI TECH CO LTD
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the above technology can detect the music signal, it cannot distinguish the foreground music from the background music, so it is not possible to use a suitable encoding technology for the background music signal according to the bandwidth.
Moreover, the above technology may treat some conventional background noise such as babble noise as a complex signal, which greatly affects the bandwidth saving

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 detection method and device
  • Audio signal detection method and device
  • Audio signal detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] 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 creative efforts fall within the protection scope of the present invention.

[0035] According to an embodiment of the present invention, an audio signal detection method is used for detecting an audio signal to distinguish background noise from background music, and the audio signal usually includes a plurality of audio frames. The method can be applied in a pre-processing device of an encoder. The background music mentioned in the embodiment of the present invention refers to: an audio signal whose signal type is music and is a background ...

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 embodiment of the invention discloses an audio signal detection method and an audio signal detection device. The input audio signal is subjected to foreground/background detection, and the detected background signal frame is detected according to a music characteristic value combined judging method, so that the background music can be detected, and the classification performance of a video/music classifier is improved.

Description

technical field [0001] The invention relates to a signal detection technology in the audio field, in particular to an audio signal detection method and device. Background technique [0002] In a communication system, the input audio signal is usually encoded and then transmitted to the opposite end. In communication systems, especially in wireless / mobile communication systems, channel bandwidth is a relatively scarce resource. In a two-way conversation, one party only speaks for about half of the total conversation time, and the other half is in a silent state. In the case of relatively tight channel bandwidth, if the communication system only transmits signals when people are speaking and stops signal transmission when people are silent, a large amount of bandwidth can be allocated to other users. In order to achieve this goal, the communication system needs to know when the caller starts speaking and when he stops speaking, that is, when the voice is active, which requir...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G10L11/00G10L25/78
Inventor 王喆
Owner HUAWEI TECH 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