Array signal alignment method and apparatus, computer device and storage medium

A technology of array signals and computer programs, applied in the field of signal processing, can solve the problems of memory consumption, low efficiency, inability to be well compatible with processing efficiency and memory, etc.

Active Publication Date: 2019-01-11
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each coefficient in the direct calculation method needs to calculate the cosine and sine coefficients once, which is inefficient
Although the look-up table method has high precision and speed, it requires a lot of memory for long phase shift sequences and variable phase shift values.
It can be seen that the traditional array signal alignment method is not well compatible with processing efficiency and memory

Method used

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  • Array signal alignment method and apparatus, computer device and storage medium
  • Array signal alignment method and apparatus, computer device and storage medium
  • Array signal alignment method and apparatus, computer device and storage medium

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The alignment method of the array signal provided by this application can be applied to such as figure 1 In the application scenario shown. The electronic product 101 includes a signal processing unit and a plurality of signal receiving units ( figure 1 5 signal receiving units are shown in , and the actual application scenario may contain more or less signal receiving units), these signal receiving units receive the signal sent by the signal source and send it to the signal processing unit for processing, and the signal processing unit realizes An alignment method for array signals. In a...

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Abstract

The invention relates to an array signal alignment method and apparatus, a computer device and a storage medium, belonging to the technical field of signal processing. The method comprises the following steps of: acquiring array signals received by a signal receiving unit; processing the array signals to obtain corresponding frequency domain array signals; determining a corresponding phase shift sequence according to a phase shift factor of the signal receiving unit; transforming the phase shift sequence according to a triangular sum difference formula to obtain the transformed phase shift sequence; obtaining the phase shifted frequency domain array signal according to the frequency domain array signal and the transformed phase shifted sequence; obtaining the aligned array signal accordingto the phase shifted frequency domain array signal. The technical scheme solves the problem that the traditional array signal alignment method is not compatible with the processing efficiency and thememory. Fast alignment of array signals can be achieved with memory savings.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an array signal alignment method, device, computer equipment and storage medium. Background technique [0002] Generally, when there are multiple signal receiving units (such as multiple microphones), different array signal data are usually received. In order to distinguish these signal data, it is necessary to screen the signal data. The screening of signal data usually adopts the methods of array signal enhancement and orientation detection. Both methods require signal alignment. Alignment operations can be performed in the time or frequency domain. During the process of implementing the present invention, the inventors have found at least the following problems in the prior art: For alignment operations in the frequency domain, two methods, direct calculation and table lookup, are usually used. In the direct calculation method, the cosine and sine coefficients ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/14
CPCG06F17/14
Inventor 黄荣均
Owner ZHUHAI JIELI TECH
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