Audio conference safe secrecy system and method using echo cancellation function

Abstract

The invention discloses an audio conference safe secrecy system and method using an echo cancellation function. The system is composed of a control system and a meeting place system. The control system is composed of a processor, a multi-path headset distributor, a conference system master controller and a multi-path audio power amplifier. The meeting place system is composed of a loudspeaker box, a headset and a microphone. The processor is provided with two sound cards and audio conference safe secrecy software, wherein the first sound card has the echo cancellation function. The software is composed of a noise playing module, an audio processing module and a pure voice output module. The method includes the steps that the audio conference safe secrecy software plays noise and collects and transmits voice with noises to the first sound card for echo cancellation and noise reduction, and the audio processing module removes residual noise of voice signals subjected to echo cancellation and noise reduction. The audio conference safe secrecy system and method resolve the problems that the anti-eavesdrop measure of anti-eavesdrop equipment is simplex, and the spreading range of sound waves is not controllable, and can effectively guarantee that the conference content is not eavesdropped and communication is not affected.

Description

technical field [0001] The invention relates to the field of audio signals, in particular to an audio conference security system for preventing conference content from being eavesdropped in a conference scene. Background technique [0002] The process of people using speech to communicate is through the vibration of the oral cavity, and the sound is transmitted through the sound transmission channel. If the transmission channel converts the sound into other types of signals (such as: a radio bug converts the sound into an electromagnetic wave signal), then the The transmitted signal is converted into sound, which is finally received by the human ear. Eavesdroppers steal conference voice information by establishing new voice transmission channels. For example, laser eavesdropping is to establish a new sound transmission channel of air-glass-laser-laser receiver-vibration analyzer-speaker to steal the voice information of the conference site. The ease and diversity of sound ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: aiming at the singleness of eavesdropping means and the uncontrollability of the sound wave propagation range that the anti-eavesdropping equipment on the market currently deals with, an audio conferencing security system and confidentiality method are proposed. On the one hand, any eavesdropping means Can effectively ensure that the content of the meeting will not be eavesdropped, on the one hand, the normal communication of the participants will not be affected

Images