Keywords
announcement, audio surveillance, blur, blurred, communication, concept, concept image, concept images, concepts, conceptual, conceptual image, conceptual images, conference room, conference rooms, differential focus, eavesdropping, lecture, lecturer, lecturers, listening, listening device, listening devices, microphone, microphones, monitoring, no people, nobody, presenter, presenters, public speaker, public speakers, public speaking, security, selective focus, speaker, speakers, speech, studio shot, studio shots, surveillance, vertical, workplace, workplaces, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u27913780