NASA Spaceflight Standard: Infrasound Limits for Astronauts (2022)

Government Record · National Aeronautics and Space Administration · April 8, 2022

NASA's 2022 spaceflight health standard limits infrasound (1 to 20 Hz) to under 150 decibels at an astronaut's head. A safety limit, not an emotion study.

Infrasonic SPLs, including frequencies from 1 to 20 Hz but not including impulse noise, shall be limited to less than 150 dB at the crewmember’s head location.

76
Read the document (PDF)Official source

NASA's 2022 spaceflight health standard limits infrasound (1 to 20 Hz) to under 150 decibels at an astronaut's head. A safety limit, not an emotion study.