At a recent checkup, I was shocked: Even though I was eating foods rich in saturated fat and a seemingly more indulgent diet, my total cholesterol was down 10 points, my bad LDL cholesterol was stellar, and my good HDL was the highest it's ever been.
As the frequency of the signal to be measured increases to approach the frequency of the source frequency, measurement error increases. To improve the accuracy of the frequency measurement for higher unknown frequency, we can use this second measurement method, count number of pulses in known time.
Is the frequency of sound measured in units called decibels?  The frequency of sound is measured in Hertz named after   Heinrich Rudolf Hertz, the first person to measure  electromagnetic waves. A single Hertz represents a single â¦cycle per  second. Humans can hear sound from about 40 hertz to nearly 15000  Hertz (also called 15 kilohertz, abbreviated as 15 Khz). Some  people with exceptional hearing range may go up to 20 Khz. Some  animals can hear even higher frequencies.     Decibels are a measurement of how loud a sound is.