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..
Kyle Sloane (Robb Derringer) Kyle Sloane was a fictional character from the ABC soap opera General Hospital. He was portrayed by Robb Derringer from November 14, 2014 to January 27, 2015. Grayson McCouch portrayed the character from February 4 to June 15, 2015. Robb Derringer reappeared as Kyle from September 3-29, 2015.