Patent ID: 8265298
Filing Date: 2012-09-11
Classification: H04R,H04S

Abstract:
1. A loudspeaker system comprising: a plurality of microphones dispersedly arranged in a room; a loudspeaker arranged in the room; a sound source-detecting section that detects a microphone corresponding to a human speaker's location from among said microphones based on input signals from said respective microphones; an input-switching section that selects an input signal from said microphone detected by said sound source-detecting section and outputs the selected input signal; and an output-section that outputs the signal output from said input-switching section to said loudspeaker, wherein said sound source-detecting section detects a microphone whose input level has continued to be above a threshold value for not shorter than a predetermined time period, as said microphone corresponding to the human speaker's location, and wherein a preset lowest threshold level is initially set to the threshold value, and when the input level of the detected microphone is higher than the threshold value, the input level is newly set to the threshold value, while when the input level of the detected microphone is lower than the threshold value, a lower value is set to the threshold value in a step-by-step manner.