A Method, Device and System for Acquiring Spatial Filter Parameter Matrix

Abstract

The embodiments of the invention relate to the technical field of data processing and particularly disclose a method, device and system for obtaining an airspace filter parameter matrix. The method comprises the steps that a first pointing matrix under first sub-band frequency is determined according to a pre-obtained first sub-band frequency matrix under the first sub-band frequency, the pre-obtained number of microphones, the pre-obtained position where each microphone is located, and the pre-obtained angle corresponding to the position where each microphone is located; numerical values of elements in a constraint matrix are determined according to the angle corresponding to the position where each microphone is located, wherein the number of the elements in the constraint matrix is thesame as that of the microphones; and the airspace filter parameter matrix under the first sub-band frequency is determined according to the constraint matrix and the first pointing matrix. In this way, it can be further ensured that a microphone array receives sound in the preset direction while small-interval arrangement of the microphone array is met, and voice enhancement is realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of data processing, and in particular to a method, device, system and storage medium for acquiring a parameter matrix of a spatial domain filter. Background technique [0002] Beamforming requires the time delay between microphones to control the direction of the beam, and then forms an ideal shape through beams of different directions. This determines the direction in which the beamforming wants to receive sound. In this manner, sounds from certain directions are all or partially received, while sounds from certain directions are all suppressed. In general, all suppressed sounds are "noise" relative to the received sound and therefore need to be suppressed. [0003] However, if it is desired that the time delay between the microphones is strictly controlled according to the preset time delay, there needs to be a certain distance between the microphones. However, once the microph...

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Problems solved by technology

[0005] For this reason, embodiments of the present invention provide a method, device, system and storage medium for obtaining a spatial filter parameter matrix, so as to solve the problem that the optimal beamforming spatial filter parameter matrix cannot be obtained in the prior art, and furthermore, it cannot be ensured in a smaller While realizing the short-distance setting of the microphone array within the volume range, it can also ensure that the microphone array can realize the beamforming in the preset state, receive the sound in the preset direction, suppress the "noise" in other directions, and achieve the problem of voice enhancement

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