Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Audio data processing method, device and system

An audio data and processing method technology, applied in the field of communication, can solve the problems of reducing the coding efficiency of the codec, consuming more calculation amount, calculation amount and bit uneconomical, etc., to improve the overall coding quality, reduce the transmission bandwidth, save Computational complexity and effect of encoded bits

Active Publication Date: 2015-12-16
HUAWEI TECH CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But for the UWB spectrum envelope, because the UWB bandwidth is extremely wide, if the existing technology is extended to the UWB DTX / CNG system, since the SID needs to encode the complete UWB spectrum envelope, it needs to consume more A lot of calculations and bits to calculate and encode more than a dozen ISP parameters
Since the noisy high-band signal (here refers to the frequency range above the broadband) is usually insensitive to hearing, the amount of computation and bits consumed for this part of the signal becomes very uneconomical, thereby reducing the coding efficiency of the codec

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 data processing method, device and system
  • Audio data processing method, device and system
  • Audio data processing method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 , the present embodiment provides a method for processing audio data, the method comprising:

[0038] 101. Acquire a noise frame of an audio signal, and decompose the noise frame into a noise low-band signal and a noise high-band signal;

[0039]102. Transmit the noise low-band signal by encoding the first discontinuous transmission mechanism, and transmit the noisy high-band signal by encoding the second discontinuous transmission mechanism, wherein the first silence of the first discontinuous transmission mechanism is inserted into the description frame The sending strategy of the SID is different from the sending strategy of the second SID of the second discontinuous transmission mechanism, or, the coding strategy of the first SID of the first discontinuous transmission mechanism is different from the coding strategy of the first SID of the second discontinuous transmission mechanism The encoding strategies of the two SIDs are different.

[0040] In th...

Embodiment 2

[0065] see figure 2 , a method for processing audio data is provided in this embodiment, the method comprising:

[0066] 201. The decoder obtains the silence insertion description frame SID, and judges whether the SID includes low-band parameters or high-band parameters;

[0067] 202. If the SID contains the low-band parameter, decode the SID to obtain the noise low-band parameter, and locally generate the noise high-band parameter, according to the noise low-band parameter obtained by the decoding and the local The generated noise high-band parameters obtain the first comfort noise CN frame;

[0068] 203. If the SID contains the high-band parameter, decode the SID to obtain the noise high-band parameter, and generate a noise low-band parameter locally, according to the noise high-band parameter obtained by the decoding and the locally generated noise The low band parameters get the second CN frame;

[0069] 204. If the SID includes the high-band parameter and the low-band...

Embodiment 3

[0108] A kind of processing method of audio data is provided in the present embodiment, for coding end, no matter be the CNG noise spectrum of low frequency band or the CNG noise spectrum of high frequency band all have lost harmonic structure usually, like this, CNG high frequency band It is the energy rather than the spectral structure of the signal that contributes to auditory perception. Therefore, when performing DTX transmission on ultra-wideband signals, in many cases it is not necessary to transmit the high-band signal spectrum in the SID, but the high-band spectrum can be constructed locally at the decoder through an appropriate method. This locally constructed The high-band spectrum does not cause noticeable perceptual distortion. In this way, the amount of calculation and bits for calculating and encoding the hyperband spectrum at the encoding end are saved. At the same time, for other noise signals, there may be a certain harmonic structure in the high-band signal...

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 discloses an audio data processing method, device and system, belonging to the technical field of communication. The method includes: acquiring a noise frame of an audio signal, and decomposing the current noise frame into a noise low-band signal and a noise high-band signal; encoding and transmitting the noise low-band signal with a first discontinuous transmission mechanism; The discontinuous transmission mechanism encodes and transmits the noisy high-band signal. The present invention can save computational complexity and encoding bits without reducing the subjective quality of the codec through different processing methods for the high-band signal and the low-band signal, and the saved bits can reduce the transmission bandwidth or be used to improve the overall The purpose of encoding quality.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an audio data processing method, device and system. Background technique [0002] In the field of digital communication, the transmission of voice, image, audio, and video has a very wide range of application requirements, such as mobile phone calls, audio and video conferences, radio and television, and multimedia entertainment. The voice is digitized and transmitted from one terminal to another through the voice communication network, where the terminal can be a mobile phone, a digital telephone terminal or any other type of voice terminal, such as a VOIP telephone or ISDN telephone, a computer, a cable communication Telephone. In order to reduce the resources occupied during audio signal storage or transmission, the audio signal is compressed at the sending end and then transmitted to the receiving end, and the receiving end restores the audio signal through de...

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 Patents(China)
IPC IPC(8): G10L19/012G10L19/18
CPCG10L19/22G10L19/012G10L19/028G10L21/02G10L19/00G10L19/18G10L25/78G10L19/0204G10L19/265G10L25/21
Inventor 王喆
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com