Recording system and its implementation method based on multi-microphone array beamforming
A beamforming and multi-microphone technology, applied in voice analysis, frequency/direction characteristic devices, instruments, etc., can solve problems such as user inconvenience and achieve better recording effects
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[0040] The invention provides a recording system based on multi-microphone array beamforming and an implementation method thereof. In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0041] First, let’s introduce the multi-microphone array beamforming technology (also known as Beam forming technology). The basic principle is as follows: individually adjust the phase and amplitude of the signal received by each unit in the multi-microphone array, so that the maximum signal-to-noise ratio in a certain direction can be obtained on the joint output, similar to the way of band-pass filtering, in the frequency domain extract the desired signal. But with beamforming for microphone arrays, the work happens in the spatial domain and is usually configurable in all directions. Due to the Fourier changes ...
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