Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method and apparatus for multi-channel encoding and decoding

A technology of encoding equipment and encoding method, which is applied in the direction of code conversion, image communication, television, etc., and can solve the problem that it is difficult to restore the original sound

Inactive Publication Date: 2011-08-03
SAMSUNG ELECTRONICS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these encoding techniques cannot accurately represent reverberation, therefore, it is difficult to restore the original sound even if the encoding bit rate is increased

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 multi-channel encoding and decoding
  • Method and apparatus for multi-channel encoding and decoding
  • Method and apparatus for multi-channel encoding and decoding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Embodiments will be described in detail, examples of which are illustrated in the accompanying drawings, in which like reference numerals refer to like elements throughout. In this regard, the present embodiments may have different forms and should not be construed as being limited to those set forth herein. Accordingly, the embodiments are merely described below, by referring to the figures, to explain aspects of the present description.

[0017] figure 1 A multi-channel encoding device according to one or more embodiments is shown. For example, refer to figure 1 , the multi-channel encoding device may include a preprocessing unit 100, a transform unit 110, a reference spectrum quantization unit 120, a phase difference calculation unit 130, a phase difference quantization unit 135, a gain calculation unit 140, a gain quantization unit 145, and a residual spectrum extraction unit 150 , a residual spectrum quantization unit 155 , a prediction checking unit 160 , a mul...

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

Embodiments of the present invention provide a method and an apparatus for encoding and decoding a multi-channel signal by discarding duplicate information among multiple channels and encoding and decoding the residual signal, without using a downmix signal. The present invention encodes and decodes: a reference signal from multiple channel signals constituting a multi-channel signal; a phase difference between each of the multiple channel signals and the reference signal; a gain which is a ratio of each of the multiple channel signals to the reference signal; and a residual signal which is an error between an actual channel signal and a channel signal predicted by applying the phase difference and the gain to the reference signal.

Description

technical field [0001] One or more embodiments relate to a method and apparatus for encoding and decoding an audio signal and / or a speech signal, and more particularly, to a method and apparatus for encoding and decoding a multi-channel signal having a plurality of channels Decoding method and device. Background technique [0002] Generally, methods of encoding multi-channel signals are classified into waveform encoding and parametric encoding. In parametric coding, a multi-channel image is formed by sending spatial cues at a low bit rate. Parametric encoding is typically performed at about 40 kbps or less using a down-mixing process performed on a multi-channel signal. Spatial cues are extracted during the downmixing process and expressed in the form of inter-channel energy or level difference, inter-channel signal similarity or inter-channel phase difference to encode multi-channel signals. Moving Picture Experts Group (MPEG) surround coding and binaural cue coding are ...

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): H04N7/32H04N7/26
CPCG10L19/04G10L19/0212G10L19/008G10L25/12H03M7/30
Inventor 金重会朱基岘克里尔·犹勒克夫波利斯·库德里亚索夫
Owner SAMSUNG ELECTRONICS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com