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|1. (WO2018199347) COMPLEX SPEAKER SYSTEM CAPABLE OF SIMULTANEOUSLY OUTPUTTING ULTRA-DIRECTIONAL AND NON-DIRECTIONAL SIGNALS|
|Inventors:||JE, Young Ho
CHO, Mun Chel
LIM, Yong Muk
|Title:||COMPLEX SPEAKER SYSTEM CAPABLE OF SIMULTANEOUSLY OUTPUTTING ULTRA-DIRECTIONAL AND NON-DIRECTIONAL SIGNALS|
The present invention provides a complex speaker system comprising an ultra-directional speaker system, capable of simultaneously outputting ultra-directional and non-directional signals, the complex speaker system comprising: a signal input unit for receiving an audio input signal to be amplified; an A/D converter for converting an analog input signal into a digital signal; a signal delay unit for delaying a non-directional signal by the amount of time a signal outputted from the ultra-directional speaker system is delayed, and outputting the delayed non-directional signal; a pulse width modulator for pulse-width-modulating the signal outputted from the signal delay unit; and a non-directional amplifier for performing non-directional-amplification on the pulse-width-modulated signal and outputting the same.