The human ear responds more to frequencies between 500 Hz and 8 kHz and is less sensitive to very low-pitch or high-pitch noises. The frequency weightings used in sound level meters are often related to the response of the human ear, to ensure that the meter is measuring pretty much what you actually hear. It is extremely important that sound level measurements are made using the correct frequency weighting - usually A-weighting.
'Bonanza,' 'Trapper John, M.D.' star Pernell Roberts dies. Pernell Roberts portrayed Dr. John McIntyre on Trapper John, M.D..
Parker Bagley is American actor best known for portraying Jason DiLaurentis in the first season of Pretty Little Liars. Biography. We don't know much about Parker Bagley, but he is also known for his role of Bobby Macdougal on the CBS soap opera Guiding Light where he made his TV debut in 2007. He acted in Nightmare on Elm Street (2010), Consent (2010) and Detention (2011). Bagley was convicted of larceny theft in 2013.