Microphone array system

Abstract

The invention relates to a microphone array system. The microphone array system comprises a microphone array and a coupling circuit; the microphone array comprises at least two microphones; the at least two microphones are distributed according to a pre-set interval; the microphone array obtains a phase difference between acoustic signals of a detected target by utilizing the at least two microphones; the coupling circuit is connected with the microphone array; the phase difference between the acoustic signals of the detected target by utilizing the at least two microphones is converted into a amplitude value difference; and the sound direction of the detected target can be judged according to the amplitude value difference. According to the invention, the microphone array is combined with the coupling circuit; therefore, the problems of relatively large size and relatively poor convenience and concealment of the microphone in the prior art can be solved; and simultaneously, the direction measurement precision under micro-aperture conditions can be increased.

Description

technical field [0001] The invention relates to target detection, acoustic signal processing and other technologies, in particular to a microphone array system. Background technique [0002] Sound is one of the main ways for human beings to obtain information and perceive the world. Correctly judging the direction and location of sound and distinguishing the specific sound source are the keys to effectively acquire and identify sound information. With the rapid development of science and technology and the rapid expansion of information, communication is no longer limited to people, but has expanded to the exchange of information between people and things, things and things. Sound plays a very important role in these information exchanges. The use of acoustic signals for target detection and positioning tracking, long-term mechanical and building status fault monitoring, and human-machine communication have been widely used. In these applications, it is also critical to q...

AI Technical Summary

Problems solved by technology

However, since the microphones in the traditional sound array are independent of each other, and generally the detected sound has a long wavelength, a large distance needs to be kept between the array units to ensure the measurement accuracy, so the size of the traditional microphone array is relatively small. Large, poor portability and concealment in practical applications

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