3D speaker created by Japan construction firm using tech for 'ultimate' soundproof chamber
TOKYO -- A Japanese construction firm has developed a 3D speaker that raised over 530 million yen (about $3.4 million) through purchase-based crowdfun
Tomas Kauer - News Moderator 
TOKYO -- A Japanese construction firm has developed a 3D speaker that raised over 530 million yen (about $3.4 million) through purchase-based crowdfun
