Self-calibration loudspeaker system

A system for calibrating at least one loudspeaker included within a group of loudspeakers, the system comprising:

• a network interface configured to form a communication link to at least one other loudspeaker within the group of loudspeakers to form a loudspeaker network, each loudspeaker in the group of loudspeakers being uniquely identified in the loudspeaker network by a unique identifier, where each loudspeaker in the group of loudspeakers is configured to provide the unique identifier;
• and
• a network calibration controller configured to coordinate control of the loudspeaker network and to perform at least one calibration function for loudspeakers in the group of loudspeakers in accordance with a respective unique identifier and corresponding location of the loudspeakers;
• where the network calibration controller further is configured to receive a microphone input signal indicative of a listening position in a vicinity of the loudspeakers, and calibrate the loudspeakers based on the microphone input signal to compensate for a geometry of a room surrounding the listening position and a physical position of the loudspeakers in the room,
• where the network calibration controller is further configured to associate each of the loudspeakers with a different function of a respective loudspeaker around the listening position based on the unique identifier, and
• where the at least one calibration function includes a sound pressure equalization function to adjust at least one of a signal attenuation and a gain for each loudspeaker for the group of loudspeakers so that a sound pressure level of each speaker is equal at a microphone.

A method of calibrating a loudspeaker comprising:

• receiving at an audio input port of a loudspeaker an audio signal used to drive the loudspeaker;
• communicating via a network interface included in the loudspeaker to form a communication link with another loudspeaker;
• registering a unique identity as provided by each of the loudspeaker and the other loudspeaker to form an associated group of loudspeakers in a loudspeaker network;
• coordinating control of the loudspeaker network with a network calibration controller based on a respective unique identifier and corresponding location in a listening area of each loudspeaker in the group of loudspeakers;
• performing at least one calibration function for the loudspeaker;
• and
• communicating over the communication network to automatically calibrate the loudspeaker and the other loudspeaker via at least one calibration function based on a microphone input signal received at the network calibration controller and the respective unique identifier and corresponding location, the microphone input signal being representative of audible sound in the listening area output by the loudspeakers in the group of loudspeakers,
• where registering a unique identity comprises associating with each of the loudspeaker and the other loudspeaker a functional location based on the unique identifier, and
• where the at least one calibration function includes a sound pressure equalization function to adjust at least one of a signal attenuation and a gain for each loudspeaker for the group of loudspeakers so that a sound pressure level of each speaker is the same at a microphone.