MULTI-CHANNEL DIGITAL MICROPHONE

摘要

Disclosed is a multi-channel digital microphone, comprising an array pickup unit and a processing unit; the array pickup unit comprises a plurality of sound pickup modules, the plurality of sound pickup modules being arranged in the form of an array, each of the sound pickup modules being configured to pick up an audio signal of a space domain component, the array pickup unit being configured to convert audio signals of a plurality of space domain components into a plurality of digital signals for output; the processing unit is connected to the array pickup unit, and configured to extract the plurality of digital signals and perform a noise reduction process. The present invention adds a space domain in addition to a time domain and a frequency domain to perform a sound pickup and a noise reduction process on signals received from different directions in a space. A plurality of sound pickup modules can be adopted to compose an array in the space domain, and the array pickup unit can pick up audio signals from different directions in the space domain; the processing unit can be adopted to perform a noise reduction process on the audio signals to improve audio quality.