Voice signal acquisition method for microphone array and acquisition device thereof
A microphone array and voice signal technology, applied in signal processing, speaker distribution signal, electrical components, etc., can solve the problems of asynchronous collection, asynchronous signal collection of analog-to-digital converter, insufficient clock driving ability, etc., to avoid noise and Distortion situation, guarantee consistency and synchronization, improve the effect of mixed acquisition effect
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Embodiment 1
[0047] Please refer to image 3 , a voice signal acquisition device for a microphone array, which includes a plurality of acquisition modules (such as 111, 112, 113, 114), a plurality of conversion modules (such as 121, 122, 123, 124) and a processing module 13, the following Explain separately.
[0048] It should be noted here that the microphone array of the present application consists of a plurality of microphones arranged in rows and columns to form a one-dimensional array, a two-dimensional array, or even a multi-dimensional array. In this embodiment, a one-dimensional column array formed by multiple microphones (such as M1, M2, M3, M4, M5) will be used as an example for illustration. The microphones here are used to receive the original voice signal and convert the natural voice signal into an analog For the signal output, the microphone can be a MEMS microphone sensor with high sensitivity, or an electret or capacitive microphone sensor, and the specific type and quan...
Embodiment 2
[0066] Please refer to Figure 6 , on the basis of the voice signal acquisition device claimed in Embodiment 1, the present application also discloses a voice signal acquisition method for a microphone array, which mainly includes steps S210-S230, which will be described separately below.
[0067] In step S210, a plurality of groups of voice signals are acquired, and each group of voice signals includes voice signals of two alternate or adjacent microphones.
[0068] In one embodiment, for example figure 2 , the acquisition module (111, 112, 113, 114) acquires one voice signal from one microphone, and acquires another voice signal from another microphone spaced apart from the microphone, so that a group of voice signals includes the voices of two microphones spaced apart signal; and / or, the acquiring module (111, 112, 113, 114) acquires one voice signal from a microphone, and acquires another voice signal from another microphone adjacent to the microphone, so that a set of v...
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