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Adaptive recording interference method and system

An interference system and self-adaptive technology, applied in the direction of communication interference, electrical components, etc., can solve problems such as unobtainable, low model order, and fully trained models, so as to prevent eavesdropping and improve the effect of eavesdropping

Active Publication Date: 2020-12-18
北京中超伟业信息安全技术股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When traditional speech processing uses a mixed Gaussian model for training the target speaker, it is often impossible to obtain a fully trained model, or the order of the trained model is very low, which cannot well represent the characteristics of the target speaker

Method used

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  • Adaptive recording interference method and system
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  • Adaptive recording interference method and system

Examples

Experimental program
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Embodiment 1

[0035] see figure 1 , the present embodiment provides an adaptive recording interference method, the method comprising:

[0036] Step 101: Obtain a target voice signal. If the acquired target voice signal is not a digital signal, it needs to be converted into a digital signal.

[0037] Step 102: send the target speech signal to The steady-state distribution model is fitted, and the target speech signal is obtained in Fitting parameters in a steady-state distribution ,in, represent characteristic parameters, Indicates the slope parameter, represents the dispersion parameter, Represents a positional parameter.

[0038] Step 103: Based on the fitting parameters, use The steady-state distribution randomly generates speech interference signals with similar speech and larger amplitude than the target speech signal.

[0039] Step 104: Release the voice interference signal into the space.

[0040] As an implementation of this embodiment, step 102 uses the Newton iter...

Embodiment 2

[0058] see figure 2 , the present embodiment provides an adaptive recording interference system, the system comprising:

[0059] Target speech signal acquisition module 201, for obtaining target speech signal;

[0060] The target speech signal feature parameter estimation module 202 is used to send the target speech signal to Steady-state distribution model is fitted, and the target speech signal is obtained in the Fitting parameters in a steady-state distribution ,in, represent characteristic parameters, Indicates the slope parameter, represents the dispersion parameter, Indicates a positional parameter;

[0061] Speech interference signal generating module 203, for based on the fitting parameters, using The steady-state distribution randomly generates a speech interference signal with similar speech and a larger amplitude than the target speech signal;

[0062] The voice interference signal release module 204 is configured to release the voice interference ...

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Abstract

The invention discloses an adaptive recording interference method and system. The method comprises the following steps: acquiring a target voice signal; fitting the target voice signal to a steady-state distribution model to obtain fitting parameters of the target voice signal in steady-state distribution, the fitting parameters representing characteristic parameters, inclination parameters, dispersity parameters and position parameters; based on the fitting parameter, randomly generating a voice interference signal with similar voice and amplitude greater than that of the target voice signalby utilizing steady-state distribution; and releasing the voice interference signal into the space. According to the adaptive recording interference method and system provided by the invention, the acoustic mask voice interference signals with similar voice and amplitude greater than that of the target voice signal can be adaptively emitted according to the voice characteristics of different people.

Description

technical field [0001] The invention relates to the field of acoustics, in particular to an adaptive recording interference method and system. Background technique [0002] In recent years, with the rapid development of information technology, various means of stealing secrets emerge in an endless stream, and the situation of state secret security is very severe. Miniaturized eavesdropping and photographing equipment can be disguised as glasses, car keys, pens, buttons, etc., and have wireless transmission and transmission functions. This will inevitably pose a great challenge to the protection of state secrets, military secrets, and personal privacy. Therefore, protection Research work on anti-eavesdropping and stealing technology of audio and image information is very necessary. [0003] The traditional anti-eavesdropping method is to use the sound masking interference recording technology to interfere with the recording and eavesdropping. The technology is to use a large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
CPCH04K3/825
Inventor 罗远哲刘瑞景闫鹿博李雪茹丁京任光远陈思杰张艺腾吴鹏
Owner 北京中超伟业信息安全技术股份有限公司
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