What are directional speakers? How directional sounds can be useful to focus sound waves only to a particular listener | Speaker, Sound waves, Technology
These directional speakers throw sound in focused beams like a spotlight - Yanko Design
Brown Innovations Directional Audio - Sound Dome Directional Speakers
These directional speakers throw sound in focused beams like a spotlight - Yanko Design
HyperSound HSS 3000 Directional Sound Speakers – Videotel Digital
Directional loudspeakers | lb lautsprecher und beschallungstechnik gmbh