Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Busy tone detecting method and apparatus

A technology of busy tone detection and audio, which is applied in the direction of monitoring/monitoring/test arrangement, etc., can solve the problems of occupying large software and hardware resources, high cost, instability, etc., and achieve the effect of simple implementation, low cost and reliable cost

Inactive Publication Date: 2008-09-24
ZTE CORP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the LM567 chip and its peripheral resistance devices are greatly affected by temperature, this method is unstable and not flexible enough
[0004] In addition, a method for automatically detecting busy tone signals is disclosed in the Chinese patent with the publication number CN1383315, which can identify various busy tone frequencies through self-training, but it needs to occupy a large amount of software and hardware resources, and the cost is too high. for special occasions

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
  • Busy tone detecting method and apparatus
  • Busy tone detecting method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] figure 1 It is a schematic diagram of the composition and structure of the busy tone detection device of the present invention, as figure 1 As shown, the busy tone detection device of the present invention includes an audio detection unit 10 and a busy tone judgment unit 11, wherein the audio detection unit 10 includes a first level discrimination and trigger module 100, a high frequency clock source 101, a first high level counter 102, A first low level counter 103 , a busy tone audio judgment module 104 and an indication signal output module 105 . Wherein, the first level discrimination and triggering module 100 is used for discriminating the high level and low level of each sign bit in the input speech signal to be detected, and triggers the first high level counter 102 or the first high level counter 102 according to the level of each sign bit The first ...

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 a busy tone detecting method which includes the steps that A. the frequency of speech signals is tested to judge whether the frequency of the speech signals is the audio frequency of the busy tone or not and an indication signal of a judgment result is output; B. the response period and the duty ratio of the speech signal are detected by using the indication signal of the judge result; C. according to the response time and the duty ratio detected in the step B, whether the speech signal is a busy tone or not is determined and the indication signal of the busy tone is output if the speech signal is the busy tone. The invention also discloses a device for realizing the method at the same time. The method has the advantages of easy realization, low cost and reliable performance.

Description

technical field [0001] The invention relates to a busy tone detection technology, in particular to a busy tone detection method and device based on symbol bit frequency detection of voice signals. Background technique [0002] Busy tone detection plays a very important role in the call. For example: after the telephone call is over, if the subscriber switch does not detect the busy tone signal in time, the trunk cannot be released and the trunk resources cannot be fully utilized. , the phone line will be busy and cannot be dialed out. In addition, in the current Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) transmission equipment, business phones need to be used for equipment management and maintenance. For the convenience of management, business phones are required to be able to communicate with the Public Switched Telephone Network (PSTN, Network) public network, but since the official telephone of SDH equipment adopts self-customized communication si...

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): H04M3/22
Inventor 曾伟宁
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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