| http://www.w3.org/ns/prov#value | - produced without electronics especially amplifiers ??? ??? ??? sound vibrations perceived by the human ear, a musical sound is described by the pitch and duration ??? ??? ??? vibration fluctuation of pitch used to make a higher or lower sound ??? ??? ??? amplitude degree of loudness or softness ??? ??? ??? pitch highness or lowness of tone ??? ??? ??? hertz a measurement of frequency ??? ??? ??? d
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