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..
Mini Bio (1) Barry Roberts was born on April 3, 1946 in New York City, New York, USA. He was an actor and writer, known for Legal Tender (1991). He was married to Tanya Roberts. He died on June 15, 2006 in Los Angeles, California, USA.