SOUND WAVE FIELD GENERATION

摘要

A system and method are configured to generate a sound wave field around a listening position in a target loudspeaker-room-microphone system in which a loudspeaker array of K≧1 groups of loudspeakers, with each group of loudspeakers having at least one loudspeaker, is disposed around the listening position, and a microphone array of M≧1 groups of microphones, with each group of microphones having at least one microphone, is disposed at the listening position. The system and method include equalizing filtering with controllable transfer functions in signal paths upstream of the K groups of loudspeakers and downstream of an input signal path, and controlling with equalization control signals of the controllable transfer functions for equalizing filtering according to an adaptive control algorithm based on error signals from the K groups of microphones and an input signal on the input signal path.

主权项

1. A system configured to generate a sound wave field around a listening position in a target loudspeaker-room-microphone system in which a loudspeaker array of K≧1 groups of loudspeakers, with each group of loudspeakers having at least one loudspeaker, is disposed around the listening position, and a microphone array of M≧1 groups of microphones, with each group of microphones having at least one microphone, is disposed at the listening position, the system comprising:
K equalizing filter modules that are arranged in signal paths upstream of the groups of loudspeakers and downstream of an input signal path and that have controllable transfer functions; K filter control modules that are arranged in signal paths downstream of the groups of microphones and downstream of the input signal path and that control the transfer functions of the K equalizing filter modules according to an adaptive control algorithm based on error signals from the groups of microphones and an input signal on the input signal path; and M primary path modeling modules that are arranged in signal paths upstream of the groups of microphones and downstream of the input signal path and that are configured to model the primary paths present in a desired source loudspeaker-room-microphone system.