Minitype microphone array device and beam forming method thereof
A microphone array and microphone technology, applied in sensor parts, sensors, electrical components, etc., can solve the problems of complex microphone structure and poor noise suppression effect, and achieve the effect of noise suppression, noise elimination and high efficiency
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] The array microphone device in the embodiment of the present invention includes a DSP chip processor, a unidirectional microphone and an omnidirectional microphone. The operation of the present invention is realized by a hardware DSP chip processor. The DSP chip includes input ports and output ports. The unidirectional microphone and the omnidirectional microphone are connected to the input port of the DSP chip processor, and are arranged side by side with each other, and their sound inlet holes face the same direction.
[0027] The DSP chip processor is integrated with: two energy statistics device modules, a comparator module, and an adaptive filter module. DSP can adopt the ADSP-21161 development board of American ADI Company.
[0028] The energy statistics device module is used to count the energy of the sound signal received by the unidir...
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