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..
Elizabeth Gillies. Elizabeth Liz Egan Gillies (born July 26th, 1993) is an American actress, singer, and dancer. She is best known for her role as Jade West on the hit Nickelodeon show, Victorious. In an interview, Liz says she is really funny and that she makes up characters who she might pretend to be while conversing with someone.