Unlock instant, AI-driven research and patent intelligence for your innovation.

Method, device and system for encoding and decoding

An encoding method and encoding device technology, applied in the field of devices and systems, and encoding and decoding methods, can solve problems such as inconvenient network transmission, relatively large impact, and inability to obtain high-quality decoding signals, and achieve high-quality results

Inactive Publication Date: 2012-09-19
BEIJING UNIV OF TECH +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the speech and audio encoding method provided in the prior art is a fixed-rate encoding method, which is not convenient for network transmission; The impact of packet loss is relatively large, and high-quality decoding signals cannot be guaranteed

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, device and system for encoding and decoding
  • Method, device and system for encoding and decoding
  • Method, device and system for encoding and decoding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The following descriptions are only some embodiments of the present invention. For those of ordinary skill in the art, On the premise of not paying creative efforts, other implementation modes of the present invention can also be obtained according to these embodiments.

[0048] In order to solve the problem that the encoding method based on MLT transformation in the prior art is not convenient for network transmission, the decoding is greatly affected by network packet loss, and the quality of the acquired voice and audio is not good, the embodiment of the present invention provides an encoding Decoding method, device and system. The following describes the embodiments of the present invention in detail.

[0049] The embodiment of the present in...

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 a method, a device and a system for encoding and decoding, belong to the communication technology and can form a code stream with an embedded structure by encoding so as to obtain an encoding signal with higher quality. The encoding method in the embodiment comprises the following steps of obtaining at least two subbands of signals; obtaining the extent enveloping quantization value of each subband; obtaining layering sequence and encoding information of each subband according to the extent enveloping quantization value of each subband; and writing theencoding information of each subband into the code stream according to the layering sequence of each subband.

Description

technical field [0001] The present invention relates to communication technology, in particular to a codec method, device and system. Background technique [0002] With the rapid development of multimedia technology, speech and audio coding technology has been more and more widely used. In the existing speech and audio coding technology, the transformation coding technology is mainly adopted, and the speech and audio signal are first transformed in the frequency domain, for example, Fast Fourier Transform (Fast Fourier Transform, FFT), Modified Discrete Cosine Transform (Modified Discrete Cosine Transform) , MDCT), modulated lapped transform (Modulated Lapped Transform, MLT), etc., then quantize and encode the obtained frequency domain coefficients, and write the encoding results into the code stream for transmission. Usually, the Huffman coding method based on MLT transform is adopted. [0003] In the process of realizing the present invention, the inventor found that the...

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): H04L1/00
Inventor 鲍长春贾懋珅李锐
Owner BEIJING UNIV OF TECH