Method and system for metering audio exposure from a wireless personal listening device

A meter system comprising:

• a wireless personal listening device (WPLD) configured (i) to be worn by a person, (ii) to wirelessly receive an audio stream defining audio, and (iii) to play out audio of the received audio stream in real time to one or both ears of the person;
• a charging device configured to be coupled with the WPLD when the WPLD is not worn, and configured to deliver energy to the WPLD to charge an energy supply of the WPLD;
• and
• a processor in the WPLD or charging device, configured to establish audio signature data representing the audio played out by the WPLD, wherein the meter system is configured to respond to coupling of the WPLD with the charging device by at least reporting the established audio signature data to an external computing system for use to facilitate measuring media exposure,
• wherein the received audio stream is a digital audio stream, and wherein the meter system is configured to transform the digital audio stream including filtering a frequency bandwidth of the digital audio stream, down-sampling the digital audio stream, and reducing a bit-length of samples of the digital audio stream, wherein establishing the audio signature data is based on the transformed digital audio stream.

A method to facilitate measuring media exposure, the method comprising:

• wirelessly receiving, by a wireless personal listening device (WPLD) configured to be worn by a person, an audio stream defining audio;
• playing, by the WPLD, audio of the received audio stream in real time to one or both ears of the person;
• establishing, by the WPLD or by a charging device with which the WPLD is configured to be coupled when the WPLD is not worn, audio signature data representing the audio played out by the WPLD;
• and
• reporting to an external computing system, responsive to at least a detection of a connection between the WPLD and the charging device, the established audio signature data for use to facilitate measuring media exposure.