A directional monitoring system and monitoring method based on sound source localization

Abstract

The invention discloses a directional monitoring system based on sound source location, which includes a monitoring device arranged at least one place within the monitoring range, a signal processing device connected to the monitoring device in communication, and a PC pre-loaded with control and recording software computer, the control and recording software communicates with the signal processing device through the PC. A directional monitoring system based on sound source localization provided by the present invention is composed of a multi-channel microphone array to form a monitoring device, and the signal processing device adjusts the phase of the received sound signal of the monitoring device based on the sound source localization algorithm of the beamforming theory, and the directivity Strong, so that the sound in the specified direction is stronger under the premise of ensuring sound quality, and the interference sound signal of the angle direction that is not concerned can be suppressed to a certain extent, and the anti-interference is strong, which helps to improve the quality of monitoring sound, and can achieve larger Range coverage, in addition, can actively monitor.

Description

【Technical field】 [0001] The invention relates to the technical field of security systems, in particular to a sound source localization-based directional monitoring system and a monitoring method thereof. 【Background technique】 [0002] The security&protection system (SPS) aims to maintain social public safety, and uses security products and other related products to form an intrusion alarm system, video security monitoring system, entrance and exit control system, explosion-proof safety inspection system, etc.; or by these A system is an electronic system or network that is a combination or integration of subsystems. [0003] The monitoring system is a part of the security system, and it is also an important part. At present, a large number of distributed pickups are installed at all monitoring positions to monitor the sound at fixed positions to achieve monitoring. Not only the directivity is poor, the monitoring direction cannot be adjusted, the monitoring quality is poo...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a directional monitoring system and monitoring method based on sound source localization, which aims to solve the problem that the monitoring method in the prior art not only has poor directivity, but also cannot adjust the monitoring direction. , Poor monitoring quality, susceptible to interference from noisy environments, and requires a large number of deployment points in large public places, and the technical problems of high deployment costs

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