Wireless coordination of audio sources

A non-transitory computer-readable storage medium for use with an integrated circuit, the computer-readable storage medium storing program instructions that, when executed by the integrated circuit, cause the integrated circuit to coordinate playback of audio content by carrying out one or more operations that comprise:

• receiving, from one or more nodes in the integrated circuit that are communicatively coupled to one or more antennas, input frames associated with electronic devices, wherein a given input frame comprises a transmit time when a given electronic device transmitted the given input frame;
• storing receive times when the input frames were received, wherein the receive times are based on a clock in the integrated circuit and are determined in a physical layer in the integrated circuit;
• calculating current time offsets between clocks in the electronic devices and the clock in the integrated circuit based on the receive times and transmit times of the input frames, wherein the calculation of a given current time offset is based at least in part on a given difference between a given transmit time and a given receive time for a given frame;
• and
• transmitting, via the one or more nodes, one or more output frames that comprise the audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets,
• wherein the playback times of the electronic devices have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated, and
• wherein the integrated circuit is configured to receive the input frames and the transmit the one or more output frames using wireless communication.

A method for coordinating playback of audio content, comprising:

• by an integrated circuit:
• receiving, from one or more nodes in the integrated circuit that are communicatively coupled to one or more antennas, input frames associated with electronic devices, wherein a given input frame comprises a transmit time when a given electronic device transmitted the given input frame;
• storing receive times when the input frames were received, wherein the receive times are based on a clock in the integrated circuit and are determined in a physical layer in the integrated circuit;
• calculating current time offsets between clocks in the electronic devices and the clock in the integrated circuit based on the receive times and transmit times of the input frames, wherein the calculation of a given current time offset is based at least in part on a given difference between a given transmit time and a given receive time for a given frame;
• and
• transmitting, via the one or more nodes, one or more output frames that comprise audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets,
• wherein the playback times of the electronic devices have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated, and
• wherein the receiving of the input frames and the transmitting of the one or more output frames involves wireless communication.

An integrated circuit, comprising:

• one or more nodes configured to communicatively couple to one or more antennas, wherein the integrated circuit is configured to:
• receive, from the one or more nodes, input frames associated with electronic devices, wherein a given input frame comprises a transmit time when a given electronic device transmitted the given input frame;
• store receive times when the input frames were received, wherein the receive times are based on a clock in the integrated circuit and are determined in a physical layer in the integrated circuit;
• calculate current time offsets between clocks in the electronic devices and the clock in the integrated circuit based on the receive times and transmit times of the input frames, wherein the calculation of a given current time offset is based at least in part on a given difference between a given transmit time and a given receive time for a given frame;
• and
• transmit, via the one or more nodes, one or more output frames that comprise audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets,
• wherein the integrated circuit is configured to receive the input frames and transmit the one or more output frames using wireless communication.