System and method of large-scale networking extended cascaded microphones

A system of large-scale networking extended cascaded microphones, comprising:

• a plurality of cascaded microphones, a cascaded Hub, and a video conference unit;
• wherein the plurality of cascaded microphones are configured for picking up a sound and completing an audio processing according to a reference audio signal received from the cascaded Hub of a superior device after the sound is picked up, and sending sound data being processed to the cascaded Hub of the superior device;
• wherein the cascaded Hub is configured for comparing energies after the sound data uploaded by one or more of the plurality of cascaded microphones of a subordinate device are received, and sending the sound data with a maximum energy to the video conference unit of the superior device;
• and
• wherein the video conference unit is configured for picking up a sound and completing an audio processing according to an audio signal received from a personal computer as a reference audio signal after the sound is picked up, comparing an energy of the sound data after being processed with an energy of sound data sent from the cascaded Hub of the subordinate device, and selecting sound data with a greater energy and sending to the personal computer;
• wherein the video conference unit comprises:
• an audio processor, a cascaded data interface, an array microphone, and a speaker;
• wherein the audio processor is configured for receiving the sound data from the array microphone of the video conference unit, and completing processing of the sound data according to an audio signal received from the personal computer as the reference audio signal, comparing an energy of the sound data after being processed with an energy of the sound data from the cascaded data interface of the video conference unit, and selecting sound data with a greater energy as a final collected sound data and sending to the personal computer;
• and further configured for sending the audio signal transmitted from an external personal computer to the cascaded data interface of the video conference unit so as to enable the audio signal to be transmitted to the subordinate device as the reference audio signal;
• wherein the cascaded data interface is configured for transmitting the reference audio signal from the audio processor of the video conference unit to the subordinate device, and for receiving the sound data from cascaded microphones of the subordinate device and sending to the audio processor of the video conference unit;
• wherein the array microphone is configured for collecting a sound of an external sound source, and transmitting sound data to the audio processor of the video conference unit;
• and
• wherein the speaker is configured for receiving the sound data from the audio processor of the video conference unit to make a sound.