Title:
COMPLEX SPEAKER SYSTEM CAPABLE OF SIMULTANEOUSLY OUTPUTTING ULTRA-DIRECTIONAL AND NON-DIRECTIONAL SIGNALS
Document Type and Number:
WIPO Patent Application WO/2018/199347
Kind Code:
A1
Abstract:
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.
Inventors:
JE YOUNG HO (KR)
CHO MUN CHEL (KR)
LIM YONG MUK (KR)
CHO MUN CHEL (KR)
LIM YONG MUK (KR)
Application Number:
PCT/KR2017/004375
Publication Date:
November 01, 2018
Filing Date:
April 25, 2017
Export Citation:
Assignee:
JDSOLUTION CO LTD (KR)
International Classes:
H04R3/00; H03F1/02; H03F1/32; H03G5/22; H04R17/00
Foreign References:
| JP2006135779A | 2006-05-25 | |||
| KR20130087678A | 2013-08-07 | |||
| KR100622078B1 | 2006-09-13 | |||
| JP2006067386A | 2006-03-09 | |||
| US20150296290A1 | 2015-10-15 |
Attorney, Agent or Firm:
SHIN, Jin Man (KR)
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