Jabin Botsford/The New York Times People shout into an intercom in the Park Avenue tunnel as part of an art installation by Rafael Lozano-Hemmer.Visitors tried out the “Voice Tunnel†art installation â€" talking into speakers and hearing it echo, with lighting tied to the sound’s intensity â€" in the Park Avenue tunnel on Saturday. People and Rafael Lozano-Hemmer’s interactive work took over the normally car-clogged artery between 33rd and 40th Streets. The work, part of the Summer Streets series, will be restaged on Saturday and Aug. 17.
