Feature
Hello, IRENE: Bringing Old Sounds to Light
Thanks to two optical imaging technologies, long-silent sound recordings of the past will once again resonate for future generations.
[iStock]
For almost as long as humans have been taking photographs, they have been inscribing sounds onto physical media. Analog sound recordings from the late 19th to mid-20th centuries constitute an important part of humanity’s heritage. Yet many are slowly decaying, worn down by an onslaught of mold, surface scratches, dust, wear and general deterioration.
…Log in or become a member to view the full text of this article.
This article may be available for purchase via the search at Optica Publishing Group.
Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits.