Audio Synchronization of a Dumb Speaker and a Smart Speaker Using a Spread Code

A system, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit a spread spectrum signal to a first electronic device over a data channel at a time of transmission, wherein the spread spectrum signal is based on a spreading code;
• receive the spread spectrum signal from the first electronic device over an audio data channel;
• despread the spread spectrum signal based on the spreading code;
• determine a time of receipt of the spread spectrum signal;
• calculate an audiovisual output path delay for the first electronic device based on the time of receipt and the time of transmission;
• and
• synchronize the playback of the audiovisual content at the first electronic device and a second electronic device based on the audiovisual output path delay of the first electronic device.

A non-transitory computer-readable device having instructions stored thereon that, when executed by at least one computing device, cause the at least one computing device to perform operations comprising:

• transmitting a spread spectrum signal to a first electronic device over a data channel at a time of transmission, wherein the spread spectrum signal is based on a spreading code;
• receiving the spread spectrum signal from the first electronic device over an audio data channel;
• despreading the spread spectrum signal based on the spreading code;
• determining a time of receipt of the spread spectrum signal;
• calculating an audiovisual output path delay for the first electronic device based on the time of receipt and the time of transmission;
• and
• synchronizing the playback of the audiovisual content at the first electronic device and a second electronic device based on the audiovisual output path delay of the first electronic device.