Spatial calibration of surround sound systems including listener position estimation

摘要

A method for calibrating a surround sound system is disclosed. The method utilizes a microphone array integrated in a front center loudspeaker of the surround sound system or a soundbar facing a listener. Positions of each loudspeaker relative to the microphone array can be estimated by playing a test signal at each loudspeaker and measuring the test signal received at the microphone array. The listener's position can also be estimated by receiving the listener's voice or other sound cues made by the listener using the microphone array. Once the positions of the loudspeakers and the listener's position are estimated, spatial calibrations can be performed for each loudspeaker in the surround sound system so that listening experience is optimized.

主权项

1. A method for calibrating a multichannel surround sound system including a soundbar and one or more surround loudspeakers, the method comprising:
receiving, by microphone array integrated into the soundbar, a test signal played at a surround loudspeaker to be calibrated, the integrated microphone array comprising a plurality of microphones mounted in a relationship to the soundbar; estimating a position of the surround loudspeaker relative to the integrated microphone array based on the received test signal at the plurality of microphones; receiving, by the microphone array, a sound from a listener; estimating a position of the listener relative to the integrated microphone array based on the received sound at the plurality of microphones; deriving a distance and an angle between the surround loudspeaker and the listener based on the estimated position of the surround loudspeaker relative to the integrated microphone array and the estimated position of the listener relative to the integrated microphone array; and performing a spatial calibration to the surround sound system based at least on the derived distance and angle between the surround loudspeaker and the listener.