Voice signal interference device

A technology of voice signal and interference device, which is applied in the direction of communication interference and electrical components, which can solve the problems of voice signal interference and inability to effectively prevent eavesdropping, and achieve simple generation method, directional anti-eavesdropping, and good interference effect Effect

Inactive Publication Date: 2015-05-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the prior art cannot effectively prevent eavesdropping, and proposes a voice signal interference device

Method used

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Embodiment Construction

[0023] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] The voice signal interference device provided by this embodiment is as figure 1 As shown, it includes voice signal acquisition and input module, automatic gain adjustment module, analog filter, analog-to-digital converter, digital signal superposition module, digital signal processing module, digital-to-analog converter, power amplifier circuit module, matching circuit module, ultrasonic transducer Energy array module and 100 digital phase shifting modules. Voice signal acquisition input module, automatic gain adjustment module, analog filter and analog-to-digital converter are connected successively, and the output end of analog-to-digital converter is connected with the input end of digital phase-shifting module 1, except digital phase-shifting module 100, all the other each The output end of each digital phase-shifting module is equally divide...

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Abstract

The invention discloses a voice signal interference device. The voice signal interference device comprises a voice signal collection and input module, an automatic gain regulation module, an analog filter, an analog-to-digital converter, a digital signal superposition module, a digital signal processing module, a digital-to-analog converter, a power amplifying circuit module, a circuit matching module, an ultrasonic transducer module and a plurality of digital phase shift modules. By means of the voice signal interference device, signals which need to be protected are collected, phase shifting is conducted on the signals to form interference signals, the interference signals are sent in an orientated mode through the ultrasonic transducer array module, the oriented anti-eavesdrop function can be achieved, and the interference signals are simple in generation mode, good in interference effect and easy to obtain.

Description

technical field [0001] The invention belongs to the technical field of acoustics and signal processing, and in particular relates to the design of a voice signal interference device. Background technique [0002] In recent years, with the rapid development of electronic technology, various digital products with recording functions emerge in an endless stream. In some secret-related places, criminals use various wiretapping devices to wiretap, and these wiretapping devices are extremely concealed and difficult to guard against. [0003] It is precisely because of the emergence and wide application of these digital products with recording functions and special eavesdropping equipment that enterprises, government departments and even individuals often encounter the problem of being maliciously eavesdropped on recordings, which seriously violates people's personal privacy and corporate eavesdropping. , Secrets of government departments. [0004] The common anti-eavesdropping m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
Inventor 杜鹏姜楠
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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