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. 2021 Jan 18;33(8):2006437. doi: 10.1002/adma.202006437

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© 2021 The Authors. Advanced Materials published by Wiley‐VCH GmbH

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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a) Frequency response of a single T‐PAPER cell (6 × 10 cm²). b) Acoustic inline measurement results of the peak SPL @ 4.9 kHz for a 100 m long T‐PAPER web. c) Schema of the acoustic inline measurement setup. d) Image of the acoustic inline measurement at the R2R printing press. e) 360° rain forest sound installation made of a 3.87 m long T‐PAPER web consisting of 56 cells, connected to 7 independent speaker segments/channels having 8 cells connected in parallel each (inset shows channel distribution). f) The 360° sound installation combined with a curved mobile booth.