Dec 24, 2020 16:00 UTC
universal sound design: Presentation on Research Results on Difficulty of Hearing Speech Due to Tools for Preventing Droplet-Based Infection
TOKYO--(Business Wire)--The Laboratory of Hearing Cognition of universal sound design inc. (hereafter “LHC,” HQ: Minato-ku, Tokyo, Japan, President and CEO: Shinichiro Nakaishi), a company aiming to create, through R&D on its high-resolution Sonic Brain® acoustic technologies, a society universally capable of hearing, has performed a joint survey with the Tokyo Metropolitan Industrial Technology Research Institute (hereafter, “TIRI”) on Speech Damping Due to Tools for Preventing Droplet-Based Infection.
Measurement Results (Graphic: Business Wire)
The purpose of the study was to understand the difficulties present in hearing when using masks, face shields, acrylic barriers, etc., to prevent the spread of COVID-19. This was accomplished by analyzing differences in sound pressure levels when masks, face shields, acrylic barriers, etc., were used and were not used. The results of the survey showed marked damping in frequency bands that affect hearing of consonants when an acrylic barrier was used, and, when a face shield was used, there was an unnatural amplification of the middle register and a decrease in speech clarity.