Scientifically speaking, the human voice is made up of sound waves traveling through space at 1,125 feet per second. The average male speaks at a frequency of 100 hertz, while the average female speaks in a higher-pitched voice, around 150 hertz. There are the Barry Whites and Céline Dions, who push vocal boundaries, but our vocal range is between 55 and 880 hertz. We also have a range of hearing, and it’s limited to sound waves between 20 and 20,000 hertz. Anything below 20 hertz is infrasonic. Anything above 20,000 hertz is ultrasonic.22 And it’s when we get outside our range of hearing that
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