Answer:
1. What is audible range?
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
2. In what units of measurement is pitch measured? How about volume?
The frequency or pitch of sound is measured in Hertz (Hz). One Hz is equal to one vibration cycle per second.
Volume is measured in units called decibels (dB).
3. Research the term “white noise. Define and explain.
A white noise machine, also known as a sound machine, can help you create a more relaxing bedroom environment that promotes healthy, high-quality sleep. In addition to white noise and other noise colors, these devices often produce ambient and natural sounds such as chirping birds and crashing waves.
4. Research the term “music of the spheres.” Define and explain.
The musica universalis (literally universal music), also called music of the spheres or harmony of the spheres, is an ancient philosophical concept that regards proportions in the movements of celestial bodies – the Sun, Moon, and planets – as a form of music.
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