Supercharge Your Innovation With Domain-Expert AI Agents!

Method for realizing voice coding and decoding changeover and intercommunication

A speech coding and speech decoding technology, applied in code conversion, telephone communication, electrical components, etc., can solve problems such as voice quality degradation, increased delay, waste of TDM resources, etc., and achieve the effect of increasing the burden

Inactive Publication Date: 2004-02-11
HUAWEI TECH CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing speech codec technology that wastes TDM resources, increases delay and reduces voice quality, and proposes a method for realizing speech codec conversion and intercommunication, so as to save TDM resources and reduce sampling delay. And avoid the cascading of low bit rate voice codec and G.711 voice codec, improve voice quality

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 for realizing voice coding and decoding changeover and intercommunication
  • Method for realizing voice coding and decoding changeover and intercommunication
  • Method for realizing voice coding and decoding changeover and intercommunication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The method for realizing voice codec conversion and intercommunication proposed by the present invention first configures multiple voice codec and decoding algorithms suitable for different networks in the same voice processing unit (chip or subsystem); Speech signal carried in the format of speech coding a; call the speech decoding algorithm corresponding to speech coding a format to convert speech coding a into linear PCM data; call the speech coding algorithm corresponding to speech coding b format to convert linear PCM data Convert it into speech coding b format and send it to network B.

[0018] The network structure of the inventive method is as image 3 As shown, the entire processing process is completely completed in one processing device, and does not require a TDM link, nor does it need to be converted through the G.711 voice codec in the middle. The processing flow is as follows Figure 4 shown. It should be pointed out that the application of the method o...

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

This invention relates to a method for realizing phonetic code and decode conversion and inter communication, first of all, arranging multiple phonetic code, decode algorithms suitable for different networks in a phonetic process unit. When receiving phonetic signals carried by phonetic code form from a network A, the phonetic decode function corresponding to a form is called and convert it to linear PCM data then to call a phonetic code function corresponding to form b is called to convert PCM data to form b to be sent to network B. The entire process proceedure is finished in a unit, eitherfinish conversion of low bit rate code / decode or conversion from low bit rate to G.711.

Description

technical field [0001] The invention relates to a method for realizing voice codec conversion and intercommunication, and belongs to the technical field of voice transmission. Background technique [0002] In the public switched telephone network (hereinafter referred to as PSTN) system, the voice signal is transmitted on the time division multiplexing (hereinafter referred to as TDM) link in the G.711 speech codec format of 64kbps. The subsequently developed mobile communication systems (such as GSM system, WCDM system, etc.) and IP telephone systems all use low bit rate speech codec technology to save air interface and transmission resources. With the wide application of mobile communication and IP telephony, more and more voice signals will be transmitted in the way of low bit rate codec. In the current latest 3G mobile communication system, the core network is based on the form of packets, and voice signals are carried on IP packets or ATM cells in the form of low bit r...

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
IPC IPC(8): H03M7/30H04M11/00
Inventor 查钧周亮
Owner HUAWEI TECH 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