Importance

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Abstract

A radio communication system includes a plurality of Bluetooth radio devices. Each device has a microphone, an audio output, such as a loudspeaker, and a short range radio transceiver capable of communicating digital data with a plurality of compatible neighboring radio devices. Each radio device is configured to receive outgoing audio data from a first neighboring radio device, to mix an input audio signal received at the microphone with the received outgoing audio data, and to transmit the combined audio data to a second neighboring radio device. Each radio device is further configured to receive incoming audio data from the second radio device, to output an output audio signal corresponding to the received incoming audio data to the audio output, and to re-transmit the received incoming audio data to the first radio device. The radio devices form a communication chain, and each radio device is in communication with a maximum of one first radio device and one second radio device. A start radio device which has no first neighboring radio device is configured to transmit to the second radio device audio data corresponding to only the input audio signal. An end radio device which has no second neighboring radio device is configured to re-transmit the combined audio data to the first radio device. The system provides an audio network that can include a large number of participant devices.

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First Claim