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

Method and apparatus for coding audio signal

An audio signal and audio coding technology, which is applied in speech analysis, code conversion, instruments, etc., can solve the problems of high-performance processor power consumption and other shortcomings

Inactive Publication Date: 2006-10-04
LG ELECTRONICS INC +1
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-performance processors have disadvantages in terms of power consumption

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
  • Method and apparatus for coding audio signal
  • Method and apparatus for coding audio signal
  • Method and apparatus for coding audio signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0049] A method and apparatus for encoding an audio signal according to the present invention will be described with reference to the accompanying drawings. The present invention aims to reduce the amount of computation required for FFT processing for performing psychoacoustic model processing of the MPEG-4 AAC algorithm.

[0050] figure 2 is a block diagram showing an audio encoding device according to an embodiment of the present invention. Such as figure 2 As shown, the audio coding device according to the present invention includes an MDCT block 110, a modified discrete sine transform (MDST) block 125, a finite impulse response (FIR) filter 127, a psychoacoustic model block 130, a coding e...

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

An audio coding method and apparatus capable of improving efficiency of a MPEG-4 AAC (Moving Picture Expert Group-4 Advanced Audio Coding) process are disclosed. The audio coding method and apparatus reduce the number of calculations of an audio coding algorithm to improve efficiency of an audio coding process. Specifically, the audio coding method and apparatus reduce the number of calculations required for a Psychoacoustic model process of the MPEG-4 AAC algorithm capable of coding an audio signal.

Description

[0001] This application claims priority from Korean Patent Application No: 10-2005-0027029 filed on Mar. 31, 2005, which is hereby incorporated by reference in its entirety. technical field [0002] The invention relates to methods and devices for encoding audio signals. In particular, the present invention relates to a method and apparatus for encoding audio signals to improve processing efficiency of the Moving Picture Experts Group 4 Advanced Audio Coding (MPEG-4 AAC) scheme. Background technique [0003] In systems capable of providing multimedia services such as Digital Audio Broadcasting (DAB) services, Internet telephony services, or Audio on Demand (AOD) services, the Moving Picture Experts Group (MPEG) audio standard plays a role in the storage and transmission of audio signals. important role. The MPEG audio coding algorithm based on the MPEG audio standard is used to compress audio signals without losing subjective sound quality, thereby reducing the channel capa...

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): H03M7/30H03M7/40G10L19/02
CPCG10L19/02H04B1/665G01B13/02G01B3/18
Inventor 康泰益崔珍奎李瑾燮朴荣喆尹大熙
Owner LG ELECTRONICS INC
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