Microphone array signal processing method and system, computer equipment and storage medium
A microphone array and signal processing technology, applied in speech analysis, instruments, etc., can solve problems such as unstable beam pattern and sensitivity to frequency changes, and achieve the effect of improving directivity and spatial filtering capabilities
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Embodiment 1
[0029] figure 1 It is a flowchart of a microphone array signal processing method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation where a uniform linear microphone array performs far-field sound pickup and improves the sound pickup quality. This method can be performed by the microphone array signal processing system provided by the embodiment of the present invention. The system can be implemented by hardware and / or software It can be realized in a way, and generally can be integrated in computer equipment. Such as figure 1 As shown, it specifically includes the following steps:
[0030] S11. Collect audio data to be processed.
[0031] Specifically, audio data to be processed may be collected through a microphone array, and the specific collection process is not limited in this embodiment.
[0032] S12. Construct a minimum-norm filter for the entire frequency band, and determine a beam pattern of the minimum-norm filter in...
Embodiment 2
[0074] figure 2 A schematic structural diagram of a microphone array signal processing system provided in Embodiment 2 of the present invention. The system can be implemented by hardware and / or software, and generally can be integrated into a computer device to execute the system provided by any embodiment of the present invention. Microphone array signal processing method. Such as figure 2 As shown, the system includes:
[0075] Data collection module 21, for collecting the audio data to be processed;
[0076] A filter construction module 22, configured to construct a full-band minimum-norm filter, and determine the beam pattern of the minimum-norm filter in a preset direction;
[0077] The sub-band division module 23 is used to divide the audio data into sub-bands in the frequency domain according to the beam pattern and the microphone array parameters used;
[0078] The target filter obtaining module 24 is used for synthesizing the sub-array filters corresponding to eac...
Embodiment 3
[0101] image 3 The schematic structural diagram of the computer device provided for the third embodiment of the present invention shows a block diagram of an exemplary computer device suitable for implementing the embodiment of the present invention. image 3 The computer equipment shown is only an example, and should not bring any limitation to the functions and scope of use of the embodiments of the present invention. Such as image 3 As shown, the computer equipment includes a processor 31, a memory 32, an input device 33 and an output device 34; the number of processors 31 in the computer equipment can be one or more, image 3 Taking a processor 31 as an example, the processor 31, memory 32, input device 33 and output device 34 in the computer equipment can be connected by bus or other methods, image 3 Take connection via bus as an example.
[0102] The memory 32, as a computer-readable storage medium, can be used to store software programs, computer-executable progra...
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