speaker, announcement, speakers, veranstaltung vortrag, announcements

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Photo credit: © Classic Collection / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: &, acoustics, announcement, announcements, chamber, color, colors, communication, communications, cool, day, days, engineering, horizontal, horizontals, horned, horneds, loudspeaker, loudspeakers, megaphone, megaphones, message, messages, object, objects, outdoor, outdoors, pressure, speaker, speakers, technique, technologies, technology, veranstaltung, volume, volumes, vortrag, warning