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Transcript
Basic Electronics & Theory Lesson 5 5.7 AC, Sinewave, Frequency, Frequency Units What is frequency? The number of cycles per unit of time is called the frequency. For convenience, frequency is most often measured in cycles per second (cps) or the interchangeable Hertz (Hz) (60 cps = 60 Hz), 1000 Hz is often referred to as 1 kHz (kilohertz) or simply '1k' in studio parlance. The range of human hearing in the young is approximately 20 Hz to 20 kHzâthe higher number tends to decrease with age (as do many other things). It may be quite normal for a 60-year-old to hear a maximum of 16,000 Hz. We call signals in the range of 20 Hz to 20,000 Hz audio frequencies because the human ear can sense sounds in this range 39
