Patent ID: 6996240

Claim:
A loudspeaker unit for a sound source, the loudspeaker unit being adaptable to changing environments, the loudspeaker unit comprising: a loudspeaker; a microphone for picking up sound regenerated from the loudspeaker; a processor for generating a difference by comparing, in real time, a direct output signal from the microphone with an output signal from the sound source with reference to a frequency characteristic and an echo characteristic of the sound regenerated from the loudspeaker, or a reverberation characteristic of the sound, including a delay time for the echo characteristic or the reverberation characteristic, the processor further generating a processor output by correcting the output signal from the sound source using the difference; an amplifier for amplifying the processor output; and a memory for storing a converted voice data of samples taken within a fixed time determined as a subject time for the delay of the reverberation characteristic or the echo characteristic.