Flexible networking system and method for supporting multi-level cascaded omnidirectional speakerphone

A flexible networking system for supporting multi-level cascaded omnidirectional speakerphone, comprising a computer and at least one device(s) electrically connected to the computer, adjacent devices of the at least one device(s) are electrically connected with each other;

• wherein each device comprises an audio processor, a cascaded data interface, an array microphone, and a loudspeaker;
• when the device serves as a slave device, the audio processor is configured to receive audio data of the array microphone of the device when the device serves as the slave device, receive audio data from a master device and use the audio data received from the master device as a reference signal, process the audio data, send the processed audio data to the cascaded data interface, and send the audio data received from the master device to the loudspeaker to be played;
• when the device serves as the master device, the audio processor is configured to receive the audio data of the array microphone of the device which is served as the master device, receive the audio data from the computer and use the audio data received from the computer as the reference signal, perform energy comparison on the audio data received from the computer and the processed audio data from the cascaded data interface, select a group of audio data having a maximum energy and send the selected group of audio data to the computer, and send the audio data received from the computer to the loudspeaker;
• the cascaded data interface is configured to transmit a sound signal sent by the audio processor to other device, and receive audio data transmitted from the other device, and send the audio data transmitted from the other device to the audio processor;
• the array microphone is configured to collect audio data from an external sound source and transmit the audio data collected from the external sound source to the audio processor of the device which the microphone is comprised in;
• the loudspeaker is configured to receive and play audio data from the audio processor.