Some taxes are inadvertently hidden, but others are consciously designed that way to disguise the cost of government. Itâs easy to see why: the total U.S. tax burden is equal to 56 percent of annual personal consumption spending.
Thus, the volume is proportional to the amplitude of the sound wave. The frequency of a sound wave is perceived as pitch. Humans can detect pitches within the acoustic range of 20 to 20,000 Hz, but we can't detect ultrasound or infrasound.
Hz stands for Hertz, a unit a measurement for frequency. lower hz is commonly bass when refering to audio higher hz is treble 8-25000 Hz is the frequency range your speakers will handle well. I hope this helps. Hz stands for Hertz. Hertz are the unit of frequency; one hertz has a periodic interval of one second. Named after the German physicist Heinrich Hertz; a physicist who was the first to produce electromagnetic waves artificially. Hz means Hertz, or 'cycles per second'.