A kind of acoustic transceiver array arrangement method and device for beamforming

Abstract

The invention discloses a method and device for arranging acoustic transceiver arrays for beamforming. By randomly generating N particles in a square area, and specifying the number of degrees of freedom M and the total degrees of freedom that characterize the constraints of a hyperhomogeneous lattice The order parameter χ of the ratio of number 2N, and calculate the number of degrees of freedom M constrained by the hyperhomogeneous lattice according to χ, and then select the integer n by increasing x and n y , obtain the inverse space wave vector corresponding to M periodic boundary conditions, and finally calculate the relationship between the coordinates of the two particles and the total potential energy ϕ of the coordinate relationship, and make the total potential energy ϕ close to the theoretical minimum value ϕ through the constrained nonlinear optimization algorithm min , and use the coordinate distribution obtained at this time to arrange the acoustic transceiver array. By arranging the acoustic devices through the super-homogeneous and disorderly arranged acoustic transceiver array obtained by the invention, the main lobe / maximum side lobe ratio of the sound field generated by the acoustic device can be provided, the influence of the side lobes on the main lobe can be reduced, and the sound source can be improved. Recognition accuracy improves the accuracy and efficiency of acoustic signal transmission.

Description

Technical field [0001] The invention involves the field of acoustic source recognition and control, and specifically involves a method and device for acoustic receiving arrays for beam forming. Background technique [0002] The acoustic device array based on beams is different from the composition device: the acoustic camera composed of microphone can be used for acoustic source recognition; the directional sound source composed of a speaker can be used for the directional transmission of the sound signal. [0003] Acoustic camera, also known as the imaginger, uses a microphone array to determine the sound source position based on the beam forming technology, combined with the camera, and use the image visualization to present the estimation of the sound source position in the way of color such as color and other high -line maps. , Effectively display the distribution state of the sound source in the space, and the sound image diagram and video image are superimposed to form a de...

AI Technical Summary

Problems solved by technology

In the process of beamforming algorithm, taking the microphone array as an example, due to the high symmetry of the traditional arrangement, it is easy to form side lobes with high intensity in a specific direction, which affects the recognition of the main lobe and reduces the recognition of the sound source. accuracy

This will reduce the energy transmission efficiency of the acoustic signal for the loudspeaker array, so that the sound energy will spread too much to the non-specified direction

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