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Conference system based on digital voice encryption

A conference system, digital voice technology, applied in digital transmission system, transmission system, key distribution, can solve the problem of information security cannot be guaranteed

Inactive Publication Date: 2018-05-25
成都动视时代科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the main purpose of the present invention is to provide a conference system based on digital voice encryption, and also provide its decryption algorithm, and in the process of encryption and decryption, it also realizes the noise reduction processing of the voice signal noise. To a certain extent, it overcomes the above-mentioned defects that the traditional encryption algorithm cannot guarantee information security and the defect that the chaotic system encrypts.

Method used

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  • Conference system based on digital voice encryption
  • Conference system based on digital voice encryption
  • Conference system based on digital voice encryption

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Embodiment Construction

[0035] Such as figure 1 As shown, a conference system based on digital voice encryption, including:

[0036] Voice collection module, used to collect input conference voice signals;

[0037] An encryption module is used to encrypt conference voice signals;

[0038] The transmission module is used to transmit the encrypted voice signal based on the B / S structure to the conference call.

[0039] Preferably, the encryption module encrypts the above-mentioned voice signal in the following manner: assuming that N initial signals s 1 (t),...,s n (t) and M key signals k 1 (t),...,k M (t), the encryption formula is:

[0040] X(t)=[x 1 (t),...,x N (t)] T =As k (t)

[0041] Among them, X(t) represents N encrypted signals, s k (t)=[s 1 (t),...,s n (t),k M (t)] T , A is an encrypted matrix of N×(M+N), and each value is between [-1,1]. Let A=[A S ,A k ], where A S is an N×N matrix, A k It is an N×M matrix, and the encryption formula is expressed by the following formul...

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Abstract

The invention provides a conference system based on digital voice encryption and also provides a decryption algorithm of the system. In the encryption and decryption processes, noise reduction processing of voice signal noise is achieved, and the defect that information safety cannot be ensured by a traditional encryption algorithm and defects caused by encryption of a chaotic system are overcometo a certain extent.

Description

technical field [0001] The invention belongs to the field of voice signal processing, in particular to a conference system based on digital voice encryption. Background technique [0002] With the global rise of network technology and the development of digital signal processing technology, voice communication technology has achieved breakthrough development and wider application. However, when the voice communication content involves personal privacy, business secrets and state secrets, people will consider the confidentiality of voice information transmission. At the same time, when performing voice communication in an actual environment, the two parties in the call are easily disturbed by the background noise of the surrounding environment, thereby affecting the effect of communication. Therefore, it is very important to study voice encryption and noise reduction to ensure the security and quality of voice communication. [0003] Voice encryption is a completely reversi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04M3/56
CPCH04L9/0861H04M3/568
Inventor 周大军
Owner 成都动视时代科技有限公司
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