Researchers at the National Museum of India have utilized multispectral imaging and AI to recover text from 7th-century birch-bark fragments written in a rare Box-Headed script variant. The recovered text, identified as a portion of the lost 'Shabda-Vaivarta,' outlines a theoretical framework for Bio-Acoustics, specifically regarding the resonant frequencies of different wood types used in construction to promote mental focus.
The manuscript details how the vibration of specific timber structures can be tuned to interact with human auditory nerves. This indicates a sophisticated early understanding of the intersection between physical materials, sound physics, and neurological states, predating many modern studies on psychoacoustics and environmental design.